Behold, the Speed Tenon
comments (424) November 3rd, 2011 in blogs
We editors would like to think we know exactly what belongs in Fine Woodworking magazine and what doesn't. Every once in a while however, we run across a different take on a traditional technique that leaves us scratching our heads, at least a little bit. That was the case when the staff recently huddled around a tablesaw to discuss the overall safety and merits of what Chris Bescksvoort has dubbed the "speed tenon.
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I first learned about this technique many years ago, in an article written by our own Chris Becksvoort. He's been cutting tenons this way for 30 years, but I was never sold until I saw him do it for myself last month. Why change out to a dado set or box-joint blade when you can bang out super-smooth tenons with your standard saw blade in just minutes?
The question is: is this technique safe enough to be included within the pages of Fine Woodworking magazine. We need your help in evaluating this technique for speedy tenons. It definitely requires close attention to hand position and feed rate, etc. So, is it safe enough for Fine Woodworking? Let us know in the comments section at the bottom of this post.
posted in: blogs, joinery, mortise and tenon, tenon, Becksvoort, speed tenon
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Comments (424)
Posted: 11:42 am on January 3rd
Posted: 6:46 pm on December 20th
Posted: 3:11 pm on December 19th
I do however believe that it is pretty effective.
To solidify the uneasiness, I do believe that your first cut, as well as it equal on the flip side, should be done using a spacer off of the fence. That spacer should stop short of the blade, so you can continue pushing the piece thru using the miter gauge as the only guide in contact with the material at the point of contact of the blade.
Woodshop 101 - tells folks in their gut - right off the bat, that this technique is all wrong, we were all taught to never use a miter gauge and the fence at the same time.
The only other issue that looks like it could require a little bit more would be to fix a larger piece of plywood (or similar) to the miter gauge when you flip the piece up vertically for stability's sake.
Apart from those two suggestions for safety, the technique is awesome.
Some may still have a problem with using the side of the blade, because they still see the use of the miter gauge and the fence being used together. However the rules change when the material is being fed in this direction, because the miter gauge is acting as the fence, and the fence is acting as a depth stop. The only caution here is definitely don't try to take off too much material (A kickback is bound to occur if you don't exercise caution here).
Thanks for sharing the technique, I personally thought it was awesome, but for the novice I'd like to see these two modifications personally.
Posted: 5:42 pm on December 12th
Posted: 4:56 pm on December 5th
Unless you are very careful, bad things can and probably will happen.
The mistakes I made were: too much wood at a time and moving the wood too fast across the blade.
Between the two mistakes I had some serous binding and kickback. Also, I let the wood ride up on the blade (lost contact with the table)
As already said before, I am not in that much of a hurry.
Posted: 1:44 pm on December 2nd
As mentioned in some other posts, I believe that one of the leading causes of woodworking injuries is doing anything that feels uncomfortable regarding safety.
That said, I also believe that feeling too comfortable is just as dangerous because safety consideration is too often overlooked.
While I have yet to try this technique, I am looking forward to doing so. In my own experience, I can say with certainty that I've had occasion to use a table saw to make cuts that appear, and probably are, far more dangerous.
Although the magazine has opted not to publish this method, I believe that the "speed tenon" technique would make a great article for the magazine -- primarily because of the amount of woodworkers who've never heard about it. However, due to the difference of opinions in this thread, a cautionary note should definitely accompany the print version.
Posted: 2:01 am on November 23rd
Just don't tell Steve Gast about it.
Woodworking is dangerous so is driving, especially here in Los Angeles, as is bicycling, climbing ladders etc.
As Sam Maloof once said, if someone had told him he "couldn't shape an arm using the bandsaw the way he did" we may never have seen his great art.
What you at Fine Woodworking must do is to be careful to "not endorse" the method. I see nothing wrong with informing people that certain experienced woodworkers use this technique.
As far as Mr. Safety is concerned, I disagree strongly. What the magazine needs to emphasize, is that people should not work with tools beyond their personal level of experience or comfort. Don't withhold the information.
Posted: 10:32 pm on November 20th
Posted: 6:13 pm on November 20th
Posted: 12:43 pm on November 20th
Posted: 2:20 pm on November 19th
Posted: 2:20 pm on November 19th
If the bandsaw is close by, it goes just as fast as the tablesaw-only approach, since the tablesaw cuts go a bit more quickly with just a sliver of material left to remove. Plus you are applying less sideways force, which means your hands aren't pushing hard toward the tablesaw blade, which is where most of the danger comes in.
Posted: 9:19 am on November 18th
Easy guy, opinions were sought out and received.
Sure, some came off as being preachy, albeit well intentioned.
That's all, except I hope today is a better day for you.
Be well
Glen
Posted: 5:20 am on November 18th
I wouldn't use this method, but I am heartily sick and tired of self-righteous, 'holier than thou' safety freaks, telling others what they should and shouldn't do. We should all know the risks in using power tools of all sorts. It's up to each individual to decide what is right and wrong for them. If you want to use this safely, a piece of timber clamped to the fence, and extending over the blade would make it better. In addition to my own well-being, I happen to think of the effects a bad accident would have on my family, and I don't take risks. So again, I wouldn't use this method. At the same time, I would point out that it wouldn't be questioned on a router table. And a router would better withstand the sideways forces than a circular saw.
Posted: 2:33 am on November 17th
That said, if you do choose to try it, I don't think the blade type matters much. The whole point is not to change the blade you normally use. If you do that, you might as well put a dado set on the saw, and cut tenons that way.
As for the danger of using the rip fence as a stop, that is way overblown for non-through cuts. But you definitely don't want to do it for full crosscuts, where the cutoff could become trapped between the blade and fence.
And last, we'll continue to seek out your opinions about woodworking techniques. I like the idea that everyone can take part in the magazine-making process. That's the power of the Web. It doesn't mean the editors still won't have the final say, but this robust and thoughtful discussion proves how passionate and knowledgeable our readers are. OK, go ahead and say I'm just kissing butt.
Posted: 4:11 pm on November 16th
Posted: 8:10 am on November 16th
Or, perhaps you should consider classifying your tricks of the trade as safe for all, get a few projects under your belt before you use this tip, and definitely for pros and those who have done at least 50 projects in the last five years.
I would put this "speed tenon" tip in the "definitely for pros and those who have done at least 50 projects in the last 5 years".
Posted: 12:02 am on November 16th
As for the table saw, I would really rather see some kind of jig where the slide part moves the stock over the blade, but you have grips on the slide to keep your hands from sliding too far into the blade.
Bob Lang of Popular Woodworking Magazine shows a technique involving cross-cuts every 1/8 to 1/4 inch and then finishing the job with a sharp chisel.
Posted: 11:57 pm on November 15th
Posted: 2:18 pm on November 14th
Smacks of laziness and crude methodology to me.
And I'm no "purist" by a long shot.
There are enough ways of getting hurt in the shop with out forcing the issue.
Also, I find it hard to believe it leaves a smooth tenon.
The amount of ripple would be proportionate to how aggressive the stock is fed.
Besides, I prefer thin kerf blades.
So, no thank you.
Disclaimer - This is not to say I've never nibbled away stock in this fasion.
Posted: 4:55 am on November 14th
As for safety. There is a class of folks who roam around in our society that you can't keep safe no matter what. After all, Sears had to but a warning on an iron to NOT iron your clothes while you are wearing them. I feel no apprehension using this technique. If any worries you could wear those really tough gloves that the saw can't cut. I have no desire to hurt my self as I really need my fingers. I make my living doing anesthesia and I am also an Organist. I watch myself carefully!! Sure, I see a lot of injuries in my profession but usually someone is doing something they should not have tried...
Posted: 12:24 pm on November 13th
As for safety. There is a class of folks who roam around in our society that you can't keep safe no matter what. After all, Sears had to but a warning on an iron to NOT iron your clothes while you are wearing them. I feel no apprehension using this technique. If any worries you could wear those really tough gloves that the saw can't cut. I have no desire to hurt my self as I really need my fingers. I make my living doing anesthesia and I am also an Organist. I watch myself carefully!! Sure, I see a lot of injuries in my profession but usually someone is doing something they should not have tried...
Posted: 12:24 pm on November 13th
I've successfully used this technique many times and believe it has a place in the workshop. If FWW includes in a future article, I would prefer it be written to evaluate where the technique is best applied; how it can be handled safely; and how it fits into the spectrum of techniques for making tenons. I would also include reference to companion video.
My grandfather and father occasionally used this technique and taught it to me. The first time I saw it documented was about 10 years ago on New Yankee Workshop.
Some thoughts from my own experience:
I choose to use this technique for less critical joinery and when I don't need many tenons.
Sometimes this technique produces imperfect shoulders when the blade rebounds back from being flexed, so go slower to reduce the affect. I would advise against using thin-kerf blades. These blades flex/rebound back more from the side-to-side cutting.
The side-to-side motion of this technique (if used alot) can premature dull saw blades, especially with woods such as hard maple.
Regarding safety:
- Get a SawStop table saw - it's cheap insurance for any technique.
- Use good safety techniques and your fingers will be safe.
- Don't rush the cuts.
- This can be safely taught to people of any woodworking level. You don't need years of experience. Rather you need attention to detail, self-confidence, and self-discipline. If you are not confident, don't do it and seek help from someone with experience. That should be standard policy for anyone working with tools; especially tools that can seriously hurt you.
Posted: 9:56 am on November 13th
Posted: 7:49 am on November 13th
That said, I have used this technique on a miter saw for years on a job site as a carpenter. Thinking back I have done this on the table saw as well but more to clean up a dado or tenon cut from several single blade passes. I think I will try it on its own for waste removal.
Seems like plenty of attention has been drawn to it and it will be tried by many. Does it need to become mainstream? Probably not.
Posted: 5:49 pm on November 12th
Posted: 7:41 pm on November 11th
Yes, as many have said, many woodworkers use this technique with success (no injury) but that does not make it a safe technique for the many reasons stated so well by others.
This should NOT be a technique endorsed by FWW.
Posted: 5:23 pm on November 11th
Posted: 5:08 pm on November 11th
Posted: 4:58 pm on November 11th
Posted: 4:37 pm on November 11th
Why? Because while these subjects are usually worth knowing about, the titles are often blatantly false for a substantial portion of workers and situations, and are a misleading disservice to those trying to learn the subject ("Oh, so THAT's how I should do it").
Even the caption under the picture illustrates this: "Sure it's fast"...well, maybe if you gloss over the setup, test piece(s) and fits, if you don't have too many to do. if you don't leave too many scallops or have stray chips cause an imperfect cut, and so on.
"but is it safe (as illustrated)?" Well...if you make no misjudgments, don't get distracted or bumped at the wrong moment, if nothing unexpected or weird happens, if the copious dust is not a problem for you, and so on, then you'll come out with all your fingers as many have stated. But then rockclimbing w/out a rope is safe in the same way.
This is an excellent article for FWW to deal with IF--and it's a big if--FWW is truly interested in teaching. Then this (or almost any) technique could be the starting point for a solid article that subsequently looks at:
- where the technique can produce less than speedy or spot-on results,
- how it could be unsafe,
- how and to what extent these could be overcome,
- and finally how it fits into a spectrum of techniques for making tenons, with references to other articles or sources for comparison (which would keep old but valuable articles part of the current discussion, and probably sell some DVDs and online subscriptions.
Such articles would be longer and require more effort to produce, but would put FWW in a different league. Of course, it may be abandoning that league intentionally in pursuit of a wider circulation, but some at least wish it weren't so. Maybe such articles could form a "technique in depth" series, which could be referenced by less comprehensive articles.
The video and discussion provided by FWW online are important, often essential as in this case. Some discussions would be worth the creation of a (possibly ongoing) online summary.
Posted: 12:07 pm on November 11th
Posted: 6:40 pm on November 10th
It's not safe at all, the hands are moving directly towards an unguarded blade. It's not even fast. My tablesaw tenon jig is faster, requires no test fitting at all, doesn't have to be central and is fully guarded at all times. Why on earth would I want to swap all that for this idiotic and dangerous practice.
The problem here is not just the practice itself, it's that the world's flagship mag. is giving it space at all. People with less experience than those involved see that it can be done and regard it is having the authority of, well, an authority. So the most inexperienced are being put a the greatest, and totally unnecessary, risk.
If you want to see how to do the job properly, twice a fast and SAFELY, Google the Ultimate Tablesaw Tenon Jig.
Steve Maskery, UK
Posted: 4:39 pm on November 10th
Posted: 3:02 pm on November 10th
Personally, I think it's a lot safer than using a dado set, particularly if you're using a radial arm saw with the dado set.
Leon Jester
Roanoke, VA
Posted: 2:18 pm on November 10th
Posted: 10:22 am on November 10th
Posted: 10:04 am on November 10th
Posted: 9:08 am on November 10th
Posted: 9:07 am on November 10th
The real advantage isn't the speed to complete a single tenon, it's not having to move mountains to set up for the cuts. Also, it allows you to sneak up on the cut for tight fitting joinery. This is especially attractive when making single run weekend projects. Additionally when using a tenoning jig, it's best to use a scrap piece to set the initial cut; with this technique, I can skip the test piece. All in all, I found the technique easy, quick to set up, accurate, and no more risky than a stacked dado set.
I suspect that a lot of the negative comments are from folks that have not even tried the technique.
Two Thumbs Up!
Posted: 8:41 am on November 10th
The still picture on the screen at the beginning of the video says it all. Enuff said.
Posted: 10:02 pm on November 9th
Posted: 3:34 pm on November 9th
Posted: 2:32 pm on November 9th
Posted: 1:14 pm on November 9th
The question, "Is this safe to publish?" is really the question, "Who's reading this magazine?"
Is this technique safe for the novice woodworker; someone brand new to the craft? Maybe, maybe not, but it's not something I'm going to teach a newcomer until I have some confidence that he/she has the wherewithal to make sound judgments when working with power tools.
Is this technique safe for the seasoned craftsmen? Again, maybe, maybe not, but the veteran is at least going to have withstood the test of time and should (theoretically) have a base of experience to draw from when making that decision.
So who is reading Fine Woodworking?
I think this question reveals a fundamental conflict within the pages of Fine Woodworking. Is this a magazine for craftsmen, or a magazine for the DIYer or novice? I think FW is struggling with an identity crisis.
When I first subscribed to FW, it was generally accepted that this was a publication for craftsmen and artists...hence the title FINE Woodworking. It was shunned by the novice woodworker and the DIYer as being too hard/complicated. There were other more appropriate magazines available for the beginner.
However, I don't think that's true anymore. It seems to me that FW is in a strange nether world. There are still top notch articles for the artist, but you need to wade through a considerable number of articles on 'The Easy Way to Cut Dovetails!" to find them. For me, the content has weakened considerably and the decision to subscribe each year has become more difficult. However, for novice woodworker, this transition may be seen as a boon.
Should FW skew towards the advanced woodworker or towards the beginner? I won't wade into that deep water, but I do believe it needs to decide. With all the pressure that print media is under, being in the wishy-washy middle is a dangerous place to be.
Do I think FW is going to close its doors if it becomes a magazine that concentrates on educating the novice? I seriously doubt it. Taunton Press has been around awhile and I don't think its going anywhere.
I only know that if it does decide to focus primarily on the education of the new woodworker (a worthy undertaking to be sure), I will mourn the passing of what had become a haven for those who are dedicated to craftsmanship and artistry in wood.
Posted: 12:18 pm on November 9th
When John Tetreault built his workbench he showed a way of using the Table Saw to make a series of cuts to make a Tenon that is just as effective and much safer.
So, to answer your question Asa, NO, I don't think this approach should be included in the pages of FWW.
Posted: 11:10 am on November 9th
Posted: 5:01 am on November 9th
Posted: 11:29 pm on November 8th
Posted: 10:47 pm on November 8th
Posted: 10:22 pm on November 8th
Posted: 7:27 pm on November 8th
Posted: 6:57 pm on November 8th
What's the issue with a little extra work time to make a tenon, why one has to use not only an unsafe but unreliable/unconsistent techniques (as described in many earlier good comments, and one technique that I had experienced myself)to make a fine woodworking job looks great? We are talking about a few minutes of work to get reliable, safe results. Use good/solow tenon and mortisen trchnique.I don't think that this so called "speed tenons" deserves any consideration. Any minor mistake means extra time and dollars, why?
Posted: 6:29 pm on November 8th
Posted: 5:22 pm on November 8th
Posted: 4:29 pm on November 8th
Other comments on this method of cutting tenons have expressed serious concerns about it and I think most are valid. If those concerns about this method were added to an article (not in FWW magazine) or video that would be available only in a medium that carried appropriate warnings that the techniques were advanced and required greater care and experience than the methods described in FWW magazines, the tips could be passed on, while minimizing criticism (or lawsuits) for seeming to advocate riskier methods that inexperienced woodworkers should not attempt.
Posted: 4:02 pm on November 8th
Posted: 2:03 pm on November 8th
Posted: 12:22 pm on November 8th
Posted: 10:20 am on November 8th
Posted: 10:20 am on November 8th
Once again Fine Woodworking is demonstrating the unsafe operation of a tablesaw.
- no dust collection
- no guard
- fingers too close to the blade
As others have said, if you're making one tenon. it's fast. yet far to risky.
If you're making 20 or 30, it's painfully slow, and far too risky.
I finally gave up on tenon making on the tablesaw because I never could design an easy to use guard with dust collection that could be used for tenoning.
I use the shaper, it has a sliding table, hold down clamps, dust collection and a tenon hood with guard that leaves the cutter enclosed.
It also makes perfectly smooth, repeatable tenons in one pass. It's a case of using machines for what they were equiped to do safely.
This certainly isn't something that FWW should promote as it doesn't advance the state of the art, or improve the safety awareness of how a machine should be used.
It's time for FWW to take a leadership position with shop safety. Would FWW be willing to demonstrate this technique to the local safety authority in their area?
Having worked in commercial wood working plants in Canada, I know that technique would be one that wouldn't fly with the safety authority.
It's time to realise that although we can do these sort of things, they're what leads to further safety restrictions.
If we can't police ourselves, a legislator will do it for us.
Regards, Rod.
Posted: 10:04 am on November 8th
As a woodworker AND clarinet player, I'm amazed that I can still play the clarinet. I cut a finger off 30 years ago, then badly recut my hand on a sliding chopsaw, requiring reconstructive plastic surgery. I finally bought a SawStop saw a couple of years ago. One year ago, my hand slipped cutting a tenon, and "Bam," the Sawstop cartridge went off as designed. Thank god for the SawStop. I got a minor cut that healed in 3 days. The Sawstep people were delighted to hear from me and replaced the cartridge at no charge.
If an accident can happen, it seems that it will. It's entirely too easy for the hand holding the wood to slip into the blade.
Use those jigs, and keep your hands away from the blade!!
Rod Prior
Posted: 9:19 am on November 8th
Posted: 9:09 am on November 8th
Posted: 7:44 am on November 8th
Remember the law suit that happen because some person got his hand/finger cut by a blade (because he was not paying attention) and sued the manufacture and won!!! I can see this happening here. Someone gets their hand/finger cut because of this technique, and sues FWW because this is where they "learned the techique". If it requires FWW to remove safety divices to show a techique, then do not show it. Think, think, think, FWW...
Posted: 7:24 am on November 8th
Posted: 5:35 am on November 8th
Incidentally how nice to see an american saw with riving knife fitted.
Posted: 5:32 am on November 8th
Andrew, UK.
Posted: 5:11 am on November 8th
Posted: 1:26 am on November 8th
Posted: 12:16 am on November 8th
1. Kick-back does NOT occur at the front of the blade, but at the back. Any 'binding' occurring at the front of the blade merely drives the work piece down to the table, just like a regular cut.
2. It is virtually impossible to remove too much stock per pass. Trying to drive the stock into the blade from the side too far back from the leading edge of the blade simply does not work if the blade has any height to it. It will start the cut then begin to burn once the piece comes to contact with the non-cutting portion of the blade.
3. If tools/machines were only used as specifically intended, where would we be today? If a hack-saw blade was never stuffed into a sewing machine we would never of had the jig saw!
4. Just because a 'factory' safety device has been removed from a tool does not mean the user cannot provide an alternate. a simple block of wood 1/4-1/2 inch wider than the tenon, clamped to the fence would suffice as a guard. Similar to the guard employed on a router table.
5. For me, as a matter of personal preference (,if not using a guard), I would perform these 'cuts' from the fence OUTWARD rather than inward as shown in the video. In this manner, if my fingers/hand were to slip, it would do so heading AWAY from the blade.
6. If in using this method to make a tenon and your results are scalloped, then you are being lazier than the technique. Stop rushing the outcome and you will achieve cleaner AND safer results.
7. Ultimately safety is the responsibility of the user, not the tool, the user's manual, UL, FWW, or the ABA. If YOU are NOT comfortable with a particular task or tooling operation, then YOU have no business attempting it, period.
Posted: 11:28 pm on November 7th
Bruce
Posted: 11:19 pm on November 7th
And "yes" as others have mentioned it will leave you with a slightly scalloped tenon, less so the tighter your passes are. I disagree that this is so bad. Depending on the extent of the scalloping, you could even be adding glue surface... hmm, tongue slightly in cheek.
Posted: 10:39 pm on November 7th
Posted: 10:38 pm on November 7th
I will speak from a realitive novice point of view:
This goes dead against the way I was taught by my woodworking teacher and more to the point is the table saw designed with this in mind? Sure you can get a lot of machines to take short cuts but like my late father who was a pattern maker in the 70's he found out twice, short cuts leads to short fingers!!!
I have been woodworking for two years now and have cut tenons in this way but my mind, body and soul did not feel comfortable doing it.
I have a thin kerf blade in my Jet contractors saw and it didn't like this technique.
I start off the tenon exactly the same way make relief cuts and then head over to the router and use the mitre guage to remove the waste. Or just use the router table?
Sure its no speed tenon but I get a nice finish and I adhere to saftey first.
I wouldn't blame FWW for putting this up as its up to the individual to use it or not.
At the very least its generated discussion.
Bryan
Posted: 9:33 pm on November 7th
Posted: 9:04 pm on November 7th
As pro woodworkers, cut whatever corners you like. You know your tolerances.
This technique combined with other joinery (novice style) that isn't perfect will yield piss poor results. It's asking to much of the glue.
Teach the right way.
Posted: 9:04 pm on November 7th
Could a sawblade be made that was intended to be used this way? Mounting a different blade would be faster than mounting a dado set.
Posted: 8:36 pm on November 7th
I saw the same kind of bending of best practices when I was a teen in professional kitchens...using deli slicers free-hand or using deep fryers to flash whole chiles.
Sure this kind of stuff works most of the time -- or better for those with more experience. And that 's just the issue: you can't write a mathematical confidence interval for the risk. Does it work 99 time out of 100? Or 999 out 1000? Is a failure a certain catastrophic failure?
I hope Taunton's lawyers are looking over your shoulder! The fact that you admit you are unsure if its right for the magazine should be a red flag, but inviting the caution or endorsement of your readership seems like a bad practice all to itself.
Posted: 8:34 pm on November 7th
Posted: 8:29 pm on November 7th
Posted: 8:29 pm on November 7th
Posted: 8:18 pm on November 7th
On the other hand, I have done this myself on a SawStop in my home shop, where I get an extra measure of protection and no student can see. But even I wouldn't do it on an ordinary saw.
Posted: 8:08 pm on November 7th
It is clear that many people use this technique and have ways to do it more safely and these can be incorporated in your final published article.
I have seen professional woodworkers and carpenters and all manner of other craftsmen undertake practises that I would consider unsafe but they are confident in the practice and know their and the procedures limitations.
Is base jumping unsafe, yes most would say it is, but those that do it know the limits and are comfortable taking part.
Posted: 8:02 pm on November 7th
Posted: 7:58 pm on November 7th
Your magazine is a favorite of readers that are just starting out as woodworkers or don’t have the tools or jigs to execute a tenon in another manner that might be more suitable to their experience level. They have a table saw which is one of the more dangerous tools a shop can have in the hands of an inexperienced operator. The temptation is there for this inexperienced undertrained operator to execute the procedure without regard for else might happen.
A certified hand therapist woodworker friend of mine viewed the video and winced at the technique. He reminded me that he has about 1 new table saw injury a week enter his office. Most of the injuries are caused by not thinking through a cut or having a mental lapse while executing a cut. He thought it ironic that the commentator stated at the 1:02 mark to “keep your fingers safely away from the blade” as you do the procedure, same as all his other patients thought they were doing.
I feel strongly against recommending the “world’s fastest tenon” procedure to woodworkers that might have inadequate respect for the damage a table saw can do.
Posted: 7:44 pm on November 7th
I think it would be best to use to use a longer wooden fence on the miter gauge if one were to push the workpiece end against the ripfence to reduce the chance of torquing the workpiece out of square.
Personally, if I am only doing a small number of tenons, I use the technique described in Yuan Chan's book on power joinery. Safe and works perfect, every time.
Posted: 7:17 pm on November 7th
Posted: 4:48 pm on November 7th
He forgot to use a cover board/scrap to protect against slipping and other mishaps. Simply clamp a scrap of board along the fence high enough off the table to clear the tenoned board and wide enough to cover the max length of the tenon.
Posted: 4:09 pm on November 7th
Posted: 3:51 pm on November 7th
I feel that compromising safety, even minimally, for the sake of speed is a questionable practice. With this particular technique, if speed is the motivating factor, an impatient attitude could easily lead to feeding too fast or trying to take too large a bite at one pass. And, as the NASA guy suggests, there may be "normalization of risk" involved for those with the confidence that comes with years of experience.
Some folks have a hard time gauging their own skill level and limitations, and may be tempted to take on something they're not really equipped to handle. For that reason, I would play it safe and leave this out of the magazine. Let it remain a "secret of the pros".
Posted: 3:24 pm on November 7th
Posted: 3:14 pm on November 7th
Posted: 12:12 pm on November 7th
Posted: 11:25 am on November 7th
I guess you have to make the decision of whether or not to put it in your book, but I have no problem showing the younger generation this procedure. This is no more unsafe than most any other procedure on the table saw. It's kind of the same as with guns.
Posted: 11:21 am on November 7th
- Use a stop block / spacer on the fence to eliminate fence contact with the workpiece while cutting with use of the miter guage. I've also done this on my sled. I have a stop on the sled and this really makes it safe.
- I typically make a number of relief cuts parallel to the shoulder cut. This helps to off-load some of the effort required with the side-ways cut. The releif cuts take out some of the waste, and then the side cuts are really for smoothing down tenon.
I taught myself this procedure. Some tasks in the shop contain more risk than others. I do not consider this 'high risk', and feel it could be safely taught. Try it with the sled!
Posted: 11:17 am on November 7th
Posted: 10:42 am on November 7th
Posted: 10:35 am on November 7th
So, to answer the question, I say, Put it in the mag. with appropriate cautions, similar to any machine operation that brings the hands into potential danger. Good judgement is always in order: how short a piece can you safely run thru a jointer? How close to the blade of your chopsaw can you safely hand-hold a workpiece?, etc.
Posted: 9:36 am on November 7th
Posted: 9:12 am on November 7th
That said, safety should be an individual's responsibility, given appropriate warnings.
Posted: 7:32 am on November 7th
Posted: 12:37 am on November 7th
konrad
Posted: 11:13 pm on November 6th
That said, I think if you are going to teach a technique that uses a tool, the best practices of the tool in question should be observed. If experienced woodworkers want to get creative, that's their prerogative.
All the arguments about safety, and lawsuits are pointless. Lawsuits rarely reflect reality and everyone knows a table saw is dangerous. There is no way to make one safe. Forget saw stop, what about all the various ways one can kickback or launch carbide teeth and mach speed at your face? Sawstop can't remedy that.
More food for thought - when you are doing something dangerous you pay close attention don't you? It's when we are doing something we have done a million times and take it for granted when we have the biggest chance of getting injured.
Posted: 10:54 pm on November 6th
This is best left to pros and/or people with a SawStop. It's not a great idea for weekend woodworkers (like me)
And I think there's a lot of truth in an earlier post suggesting that most of the time, one has a lot of tenons to cu for a project, and that this technique only saves time when you have just a few tenons to cut.
Posted: 10:36 pm on November 6th
Posted: 9:39 pm on November 6th
Posted: 9:33 pm on November 6th
Posted: 8:46 pm on November 6th
Jim Poole
Somerset, VA
Posted: 8:31 pm on November 6th
One possible solution would be guard box that would clamp over/to the fence. It could have a polycarbonate top so vision wouldn't be hindered. If your grip slips, your hand would hit the side of the box, and if you bit too much and had a kickback the workpiece would hit the back of the box. In the design I envision, it would only accommodate a range of tenon sizes. So if you were doing really big tenons, you might need a larger guard box.
Posted: 8:23 pm on November 6th
Posted: 8:23 pm on November 6th
Posted: 6:55 pm on November 6th
Posted: 6:12 pm on November 6th
Posted: 5:08 pm on November 6th
If this method of cutting tenons has merit over and above the dado set method, PLEASE tell me about it. (Hmmm, you already have, haven't you?)
If there is fear of this being dangerous, then yes, offer it as an online piece so readers watch video to see how it is done.
And how about backing that up with a link to a short series of table saw safety videos PROMINENTLY displayed on that online page?
I think you could do a great service by showing that link on a regular basis. Make it interesting by showing how the lack of a riving knife can send a spinning board slamming into a wall behind the operator. Show how ejection works with a similar dramatic demonstration. And show how to avoid both situations
I think a good series on what can go wrong, HOW it can go wrong, and how to avoid these traps would be a great service to all woodworkers.
If you've already done it and I just didn't see it. I apologize.
If such a production would be too expensive for one magazine, maybe it could be a joint venture?
Maybe you could finally get the manufacturers behind this? Perhaps the latest legal actions will convince them that they can't hide behind the "problem, what problem" facade any more.
And even if every table saw built from this second forward used SawStop technology, that would still sentence us to decades of injuries from the saws that are already out there.
The education has to be done.
Posted: 4:49 pm on November 6th
Posted: 4:20 pm on November 6th
Posted: 3:38 pm on November 6th
The concern about trapping a piece between the saw blade and the fence is not too much of an issue since no piece is cut completely away from the stock.
The side loads on the blade are likewise not much of an issue. The side load cannot be greater than the force exerted by the woodworker to slide the stock against the blade. This is a very low force compared to the capability of the arbor bearings.
Forces exerted by the saw blade on the tenon are not high because the rate of material removal is low. In addition, if the miter fence is positioned close to the blade as it should be, the force tending to rotate the stock away from the miter fence is easily counteracted by a small force exerted by the woodworker to hold it against the fence.
Dealing with the issue of finger to blade proximity, I use a shop-made guard attached to the top of the saw's fence to cover the saw blade and mark it to show the extent of blade protrusion above the table top. The marks provides a guide for starting the cut and lets me see how far to proceed to ensure removal of material from the entire width of the tenon.
I would like to see this article published in FWW along with discussions of other unconventional methods of work, as long as the safety precautions are made loud and clear. If the blade is sharp, the miter fence is positioned close to the blade, the stock is long enough to comfortably hold against the fence and slide into the blade, the miter fence and saw table top are smooth and the stock slides with little friction, then the process for making tenons can be safely used to quickly produce accurate tenons with good repeatability. In addition, the use of a shop-made fence can keep fingers away from the exposed blade.
Posted: 3:09 pm on November 6th
Some very interesting and informative comments.
I do not think the technique is inherently unsafe. It will all come down to the saw blade and the saw.
I am an engineer and have in the past been involved in the design and manufacture of saw blades. In my opinion some blades will cope with this type of operation and some would be quite likely to fail either through tip or disk failure. I would also be concerned with the arbor design of the saw. Some are not designed for high lateral loads.
I know the reply will be that “I have done it for years without an accident” and that will be true. Most saws and blades are over engineered. However you cannot guarantee that the margin of overdesign is always adequate. As more and cheaper imports are now available we must consider that what makes them cheaper is that they may be not as well built or that the margin of overdesign has been reduced.
I would not consider this technique without checking with both the blade and saw manufacturer or importer. However I really doubt that they would be prepared to answer your question definitively.
The bottom line is that with a properly designed blade and a saw whose design has consider such a side loading this technique is on a par with most others for safety.
Regards
Robert
Posted: 3:09 pm on November 6th
Why are we “reinventing the wheel” for making tenons? I’ve always maintained that using the tool that was designed for the job, along with the proper setup, helps to maintain safety in woodworking.
I don’t understand why FWW would want to teach any woodworker to use a totally-exposed single blade to make side-cuts for making tenons, instead of a dado blade combo. I’ve used the side-cut method for making wide coves, but at least a jig is used and the blade is under the work piece. Also, why is safety being put at risk by suggesting the use of a rip fence and miter gauge combo?
With over 40 years of woodworking, I’ve invented and/or used dozens of shortcuts, but I have learned that the byproduct of any shortcut “using speed” is an accident.
Being a subscriber to your magazine since Issue #1, I’ve used many of your shortcuts. But, please FWW, do not publish this one. You’ll only be exploiting the dangers of the table saw.
Posted: 3:05 pm on November 6th
Posted: 2:54 pm on November 6th
I'm not sure why people think this could cause kickback.
Think this through folks: In order for something to kick back the blade has to catch something and propel it forward. With this method, how much, of what, can the blade catch, and how far can it push it? There is minimal potential for kickback.
Personally, I don't make the shoulder cut first. Just start nibbling. The only place I can think of where there is a potential to bind the piece against the blade is when making the shoulder cut with the piece trapped against the fence.
Posted: 2:19 pm on November 6th
Posted: 2:13 pm on November 6th
Posted: 2:11 pm on November 6th
-Jed Ervin (Kansas City)
Posted: 1:06 pm on November 6th
At a time when the CPSC is considering new regulations on table saws and juries are giving multi million dollar settlements to people who can not even cut a board correctly this would be puring gas on a fire.
Posted: 1:04 pm on November 6th
Posted: 12:58 pm on November 6th
Posted: 12:46 pm on November 6th
Odell
Posted: 12:25 pm on November 6th
After reading my eyes sore, I finally found what Wade01 wrote, that is very much to the point: that unless the teeth of the blade are designed and sharpened for side-cutting (e.g. the Freud Fusion), you are in trouble. And even at that, with too great a bite you are feeding wood into the blade body rather than into the teeth. Neither of these conditions pertain to the tenon jig or the router table, where this job can be done not only more safely but with smoother results. If I were fitting barn timbers maybe this is a valid technique, but in doing *fine woodworking* I want a flat, not scalloped, finish on my tenons.
I share with Hal_in_Houston the experience of being a NASA engineer (also with JSC, but retired, in my case), and I strongly second his suggestion of a safety article (maybe even a regular column?). Journals in other disciplines I am familiar with (scuba, climbing) regularly publish articles along the line of "what went wrong here, and what should have happened instead?" In woodworking, simple things can go badly, and rapidly, but mostly avoidably, wrong. Anybody here with no scars at all?
Foresight really trumps retrospect; I kinda wish I'd seen a column about the inadvisability of cutting a triangular wedge out of a board inverted on the tablesaw, for example. Fortunately, I have often enough read of the inadvisability of standing in line with the blade. Consequently he nasty bruise occurred to my shop wall, not to my waist line. So, how about a video series on safety, similar to one I saw in which the dynamics of pinched tablesaw cuts and kickback were demonstrated using polystyrene foam?
-- Richard Juday, Longmont CO
Posted: 12:04 pm on November 6th
Posted: 12:03 pm on November 6th
Posted: 11:32 am on November 6th
1) Can the average saw blade handle this kind of stress? I believe carbide teeth on a blade are designed to cut straight on. Chances are they are up to the stress but it bears looking into.
2) Possibility of a kickback or some similar situation of binding that might case a problem.
I don't think I will rush down to the shop and try it today but it does offer some advantages. FW may need to do some serious research prior to publishing this trick.
Posted: 11:29 am on November 6th
Posted: 11:24 am on November 6th
Posted: 11:23 am on November 6th
Posted: 11:01 am on November 6th
I would be concerned about the stress on the blade and arbor from side pressure. Especially if you are doing several tenons and get a little too greedy on how much material you try to remove. I do appreciate the technique as far as thinking of new methods thought.
Posted: 10:50 am on November 6th
Posted: 10:29 am on November 6th
For an experienced woodworker, I'd say it's barely acceptable if you found yourself without a dado, proper handsaw, or other safe technique; and I'd go real slow and wouldn't admit that I used the technique.
We all take some shortcuts. I'd leave this out of FWW. This is the kind of technique that someone without the knowledge of the dangers involved with this sort of cut - lateral load on the blade, where the blade engages the wood can not be seen by operator, making a trapped cut with the rip fence, etc . . . - won't read all the safety caveats that go with it and gets hurt. Then we all pay.
Posted: 10:26 am on November 6th
Posted: 9:57 am on November 6th
Let me share a little personal insight on safety (no insult or criticism to anyone who has posted on this subject above).
After the Challenger and Columbia accidents, we did a lot of soul searching here at the Johnson Space Center about safety. One of the lessons learned was a mental process known as “normalization of risk”. In layman’s term it is when you perform an action over and over again, you perceive that action is “safe”, even when it may not be. We all do it.
I have an aunt and uncle who swear that it is safer to not use seat belts because they may be trapped in a burning car. Or folks that text while driving, because we they are great multi-taskers. Their experience of not having an accident (yet) has misled them to perceive their behavior as “safe”.
What I have read above is a lot of folks who are exercising “normalization of risk”.
Others made a critical judgment on the level of safety, time savings, and alternative methods. Their assessment is that any time saving or cost is a poor trade in speed cutting tenons.
I would recommend that you print a different article…”Normalization of Risk and how we can all strive to be safer woodworkers”. Safety is not that set of rules that comes with your power tool (those may be helpful), it is rather a mindset of analyzing the risks and benefits of what we do.
Folks can make their own decision for the level of safety.
At NASA, it took the lives of 14 astronauts to learn this hard lesson… again. Hopefully, you will not have to lose a finger doing this technique or others like it.
Posted: 9:17 am on November 6th
Posted: 8:26 am on November 6th
Posted: 7:57 am on November 6th
However.
In a world where a guy can get a million bucks from Ryobi even after removing all the safety features from their saw before cutting himself, I think you'd be better advised to keep that one to yourselves. I would not want to be the guy who took too big a bite on a long tenon with just that little miter gauge you were using. I use a sacrificial fence on mine with the dado set, to better avoid eating the workpiece.
As well, there is the difficulty showing this technique in a magazine. Video makes it obvious, the printed page would be difficult.
Erring on the side of caution is no sin.
Posted: 7:48 am on November 6th
Now that I'm thinking about, I do not think FW should exclude any techniques, even ones the magazine explicitly rejects, pointing out why some methods are so unsafe that they should never be used because... That is how all of us, from novices to life-long learners who just haven't tried "that" dumb move yet, can continue to learn.
As to the specifics of the Brecksvoort Tenon, I will try it, but I would appreciate some specific instruction about the points of greatest risk and what I must do/not-do to avoid them.
Thanks for asking.
Posted: 7:35 am on November 6th
Posted: 5:47 am on November 6th
Posted: 5:40 am on November 6th
I now use a tenong jig and keep my hands away from the blade. Thanks
Posted: 4:32 am on November 6th
That is the TYPE of blade that is being used? For example, a carbide tip blade is sharpened on the side as mentioned in passing but there are other blades out there that are NOT.
I think that point should have been stressed more and then I don't see a lot wrong with this cut.
I have a heavy duty (to me anyway) cast iron tenon jig and I'll continue to use it. It cost too much to throw it away and I don't fish so don't need an anchor.
Posted: 3:23 am on November 6th
I've used this method for half lap joints as well and it proved fairly useful and quick. Nevertheless, there is a certain hesitation I think, as one has to be sure to have a good hold of the stock against the miter. Relax that grip and one could be in serious trouble. What affect, if any, does it have on the saw blade cutting the wood this way? Does it dull faster and what about the RPM's of the table saw, does this come into play, as well as the set of the blade. I wouldn't use any less than a 60-80 toothed carbide blade. It seems there are a lot of questions and so maybe passing this along in the magazine might prove to be an issue of liability? Woodworker to woodworker is one thing but Fine Woodworking Magazine giving its seal of approval of this method may not be in its best interest.
Posted: 3:02 am on November 6th
I usually make several cuts before beginning the shaving process. It works just as well but a little slower. Just remember to take only a little at a time, and never ever force a piece of wood into a moving blade if it won't go. Just back off and take a smaller bite.
Posted: 1:40 am on November 6th
I think we have become too risk averse, too afraid to take any risk. I for one think this is a fine technique, and it's not the first time I have seen it done. I have done very similar operations, although probably not as efficiently as Mr. Becksvoort, but have benifitted from it and felt no added anxiety while doing it.
I think it would be a fine topic for FWW, unless someone's afraid of ambulance chasers. If that's the case, why bother publishing anything at all?
Posted: 1:22 am on November 6th
As a former scuba instructor, I am very aware of how one's perceptions narrow as one gets task loaded with unfamiliar activities - and the direct relationship between one's awareness of their surroundings and safety. In this case, the task of showing off a new technique for a video camera may well have been that little bit of distraction that caused Asa's hesitation; for a novice to this technique, the task loading of trying something new, with a foreign set of arm movements and reactions will almost certainly reduce their situational awareness in the same way.
I could see this leading directly to a kickback if the workpiece was pulled back halfway through the shoulder cut - and I can't think of any way to convey a warning about this subtle "accident waiting to happen when your attention wanders" in the space limited pages of a magazine article. When combined with the "don't use a miter gauge and a rip fence together" comments, this sounds more and more like a candidate for the circular file...
Posted: 1:01 am on November 6th
Posted: 12:50 am on November 6th
This tenon-making technique is an example of an approach which may save seconds and cost minutes. Perhaps it is the fastest way to make one tenon (and I have doubts about that). But how many designs can be completed with a single tenon? In furniture making, eight tenons is often on the low end of the number needed to complete a design- left and right sides of the piece, upper and lower rails, each with a tenon on both ends. The number of tenons needed table apron will likely be eight, too. A design with two frame and panel doors will double that tenon count. So for most designs, a little extra time spent in setup can save time overall, and lead to better results, with greater safety.
In realizing an actual project, the tenon usually needs to be a specific size. The video makes this technique look quick, because the rip fence is slid over to about there, the blade cranked up to roughly here, and then later moved up a bit more. That won't cut it (to the correct size), if you want this tenon to fit the mortise. If you want the tenon to be the right size, the careful cut and try adjustments are going to eat into the putative speed of this technique. Of course, you can compensate for the "whatever" dimensions of the tenon by modifying the size of the mortise. At the cost of lost time there. And if you need to make an additional tenon later (after changing the blade height), due to a damaged workpiece, forgetting something, or another mistake, this technique makes it very slow to match precisely the size of the additional tenon or tenons to the size of those cut earlier.
And how about quality? Using this technique, the thickness of the tenon is defined by the height of the blade at the top of its arc, that is, the tangent of the cutting circle. Each time the workpiece is fed sideways into the blade, it cuts to full height only along a line parallel to the saw's arbor, at the blade arc's center. The rest of the blade will cut at less than full depth, if it contacts any wood at all. Theoretically, it would take an infinite number of passes to cut the complete tenon surface to full depth along an infinite number of lines. So everyone will stop short of that, and end up with a slightly wavy surface on the tenon. How flat is flat enough? How many passes will that take? How much slower will this technique be, if you want to get a really smooth, consistent tenon? If your standards are low enough, many things can be done quickly.
I tried this technique some years ago, after seeing Norm Abram demonstrate it. I tried to make a careful determination of how much time it took. For the techniques that I use, the kind of furniture that I make, and the minimum level of quality that I will accept, this technique did not save me time, and it was less satisfying and felt less safe.
No technique is right for every person or every situation, but I think this one is of limited value. If you want a quick, safe, repeatable production method of making lots of perfect, identical tenons, run a few dozen (or hundred) feet of loose-tenon stock through your planer. Then cut your loose tenons to length and width as needed. If you standardize your work to use a few standard tenon widths, as well, then you can save even more time. The total time per tenon will be miniscule. You will have to cut twice the number of mortises, but production will be much faster than using the technique under discussion here.
Posted: 12:37 am on November 6th
The no fence with gage rule should stand. The possible, and in many cases inevitable, kickback on a table saw is one of the most powerful, frightening, and damaging reactions in a shop due to a safety violation. One must practice zero tollerance when it comes to safety.
The only alternative that comes to mind for nibbling a tennon in this fashion would be with a sled and then only for pieces that are not longer than the sled is wide. I can see someone trying this gage with fence technique with an eight foot table apron. Can't you?
Posted: 12:10 am on November 6th
Posted: 12:01 am on November 6th
Posted: 12:01 am on November 6th
Posted: 11:03 pm on November 5th
Posted: 10:53 pm on November 5th
Posted: 10:23 pm on November 5th
Posted: 10:16 pm on November 5th
Posted: 10:14 pm on November 5th
I also learned many years ago how to do the job correctly, using either power or hand tools, and it is from this that I have an appreciation of the construction and use of the joint. This will not come from the quick and dirty method. Everyone should learn the right method first. Then develop our own short cuts to reflect our developing skills.
Posted: 10:11 pm on November 5th
However since this magazine is read by many who are new to the craft, I think you must show extreme caution in making the tenon.
Posted: 10:08 pm on November 5th
Posted: 9:54 pm on November 5th
You shouldn't put it in fine woodworking
Posted: 9:39 pm on November 5th
Anyway, upward and onward. In this case, I'm leaning toward leaving this speed tenon technique out of the magazine. As many of you have pointed out, the magazine speaks to woodworkers at every level, and this technique might be dangerous in less-experienced hands. That's how many on our staff felt, too.
Tough call. This one was right on that line between what people do in the real world and what a responsible teacher would teach.
Posted: 9:37 pm on November 5th
Posted: 9:19 pm on November 5th
Posted: 9:18 pm on November 5th
That said, might be useful to provide the last word on some TS safety issues. For example, my understanding is that you should never use miter gauge and rip fence together FOR A THROUGH CUT, but it's perfectly fine for a non-through cut like the one demonstrated here.
Posted: 8:59 pm on November 5th
Btw, I am one of the many thousands of woodworkers (26 years of experience) who managed to do something stupid about 6 years ago and it cost me half a thumb! All that experience, and careless still happens.
Bottom line - If it doesn't feel right for you, don't do it!
Posted: 8:58 pm on November 5th
Anyway, I do a lot of things, with my eyes wide open, that I know I shouldn't do. I've paid the price many times. Not only would I not recommend some of my "techniques", I doubt I would even tell another woodworker for fear they may chose to try them. I am all for moving the trade forward, but teach the basics, safety and let the individuals develop their own methods/modifications.
Just my $0.02
Posted: 8:56 pm on November 5th
Posted: 8:52 pm on November 5th
Posted: 8:40 pm on November 5th
By the way, for all of you "the bandsaw is safe guys". There is no blade guard on a bandsaw to stop the fingers from going into the blade if the piece suddenly skips ahead. 40 years ago I watched my shop teacher nearly cut his thumb off on the bandsaw. Plus I grew up in cattle country with a slaughterhouse being one of the town's biggest employers. The meat cutters lost a lot of fingers at the bandsaw while cutting up beef. All power tools command attention, thinking through the cut, and using the safest techniques possible. Safety first, quality of cut second, speed last.
Happy woodworking,
gdblake
Posted: 8:32 pm on November 5th
Posted: 7:55 pm on November 5th
Great tip though!!
I have been using this method on my Router Table,
never thought to try on a table saw.
Posted: 7:40 pm on November 5th
Posted: 7:34 pm on November 5th
I think Fine Woodworking should do an article on cutting tenons by hand, although it may be a bit slower, it is a lot safer!
And by the way, all of my handsaws are equipped with flesh detecting technology!!
Posted: 7:15 pm on November 5th
Can this otherwise slick method be made safe?
Steve
Posted: 7:14 pm on November 5th
That said, I don't think this technique is so dangerous, though I would say that there should be a safeguard (either by technique or by physical restriction) to mitigate the action of moving fingers directly toward the blade. I'd bet some of the clever people here could come up with something that's both safe and simple, and ultimately effective.
Posted: 7:03 pm on November 5th
Posted: 7:00 pm on November 5th
Posted: 6:59 pm on November 5th
Posted: 6:54 pm on November 5th
Posted: 6:34 pm on November 5th
Posted: 6:30 pm on November 5th
Posted: 6:25 pm on November 5th
Put it in the mag.
Posted: 6:15 pm on November 5th
Posted: 5:40 pm on November 5th
Regarding the original question, no problem for experienced woodworkers who understand their equipment and their own limitations.
Posted: 5:38 pm on November 5th
Posted: 5:29 pm on November 5th
Posted: 5:17 pm on November 5th
Posted: 4:57 pm on November 5th
Posted: 4:53 pm on November 5th
Posted: 4:39 pm on November 5th
Posted: 4:38 pm on November 5th
Jabe
Posted: 4:30 pm on November 5th
Doesn't pass the "Read, understand, etc. ..." TS manual safety instructions. Too many people out there that could/would/will screw this up.
Also, this technique uses the fence AND the miter gauge - not safe - I know, not a through cut, but...
Larry
Posted: 4:09 pm on November 5th
I've used this technique before for just a couple tennons. It save a lot of time. Then I took a larger job, and found that the repetitive motion wore on my hands and forearms. Now I design tennons with cheeks and shoulders cut at the same depth and either dado or tennon jig.
Posted: 3:47 pm on November 5th
Posted: 3:27 pm on November 5th
Posted: 3:18 pm on November 5th
Want fast? Get a Festool Domino. It's safe too.
Posted: 3:06 pm on November 5th
Posted: 3:01 pm on November 5th
As to all the chatter about using the sides of the blade, it is no different than cutting a cove on the tablesaw using the sides of the blade. As long as you don't hog it off, no harm, no foul.
Thanks for the good tip! Rory
Posted: 2:57 pm on November 5th
Having said that, a few words spend pointing out how to reduce the risk of catastrophe might help: for example where to hold the piece so that should your fingers slip you dont lose too many, or, be careful not to feed to big a bite.
Just another tidbit, the first time I saw this done it was with a circular saw during the building of a post-and-beam home in Vermont. The guy had been doing it for years.
In the final analysis the risk is a variable with the technique as one factor and how it is executed as another. If one is experienced and careful then even an inherently risky procedure can be executed at reasonable risk.
Posted: 2:55 pm on November 5th
Posted: 2:48 pm on November 5th
Posted: 2:34 pm on November 5th
Posted: 2:24 pm on November 5th
Posted: 2:23 pm on November 5th
I like others have done this type of tenon with great sucess and I do believe that I have seen this in an article in another magazzine sometime ago. As long as the woodworker practices safety and is fully aware of what he/she is doing this is a safe alternative to cutting tenons.
Posted: 2:23 pm on November 5th
Posted: 2:19 pm on November 5th
Posted: 2:17 pm on November 5th
Oh, I guess there are still a few die hard legacy hold-outs not using SawStop. But since they haven't had the intelligence to convert to the new technology, who cares if they get hurt?
Okay, maybe sarcasm wasn't what you were looking for in your comments. If so, though, too bad!
Posted: 2:10 pm on November 5th
The consensus of the comments thus far is to publish the article and I am OK with that as long as a safety warning is included concerning the possible hazards of this practice.
Posted: 2:08 pm on November 5th
Not sure if other commenters have suggested the same thing, but it's a head-to-head that I'd be very interested in reading. And an interesting look at speed relative to danger to let your readers weigh their options based on the results.
Posted: 1:52 pm on November 5th
Posted: 1:49 pm on November 5th
Posted: 1:38 pm on November 5th
Posted: 1:36 pm on November 5th
As stated earlier, natural selection works just fine on topics like this.
Looks like a great, speedy solution to oft tedious tenon cutting.
Posted: 1:27 pm on November 5th
Posted: 1:24 pm on November 5th
Posted: 1:18 pm on November 5th
It's already in cyberspace and the video almost stands alone; its descriptive explanation doing move than any text and photos.
As others have said..........your readership market doesn't target children and careless speed freaks. Nonetheless, all the more, even so............you can be assured those types have already watched the video and probably have tried it.
FW.........just do your thing. Let the idiots fend for themselves.
Posted: 1:02 pm on November 5th
Posted: 1:01 pm on November 5th
like eany thing thing else, it depends the person doing it,i liikeit ive been doing that for a quite awile,you juts got be carefull
Posted: 12:55 pm on November 5th
or you can also use piece of the 1/4 in material, and attach it to miter gage board.
This makes the tenon material slide much easier, and less likely to catch. Try it
out works great.
Posted: 12:52 pm on November 5th
Posted: 12:48 pm on November 5th
Posted: 12:47 pm on November 5th
After reading all of the previous comments I am surprised at how many people say they already use this method. I would be willing to bet that most of them are confusing this with the nibbling method that Norm Abram has demonstrated for years. They are not the same. When Norm does it he makes all of his cuts directly into the teeth of the blade, never at 90° to the blade. Then he may do a little side to side motion to clean up the cut. The direction of force is parallel to the blade and his hands are off to the side. If his hand slipped it would not go toward the spinning blade. In the method used by Chris Becksvoort the force is directed at the blade where a slip could be disastrous.
Comparing this method with cutting coves on the table saw is also wrong. The cove cuts are almost always made at an angle less than 90° to the blade so the wood comes into contact with saw teeth first. Even a cut at 90° you would only have the tips of the teeth exposed above the saw table (unless you are really stupid, then you shouldn't be allowed to use power tools).
If you do decide to put this tip in the magazine (and you really shouldn't), please stress that the speed part is in the time saved by not having to change blades or set up a tennoning jig, not that the cuts should be made quickly.
Posted: 12:36 pm on November 5th
I have never seen such an outcry one articles the deal with making cove cuts with a table saw.
A novice on a lathe is just as likely to cut to aggressively!
Don
Posted: 12:33 pm on November 5th
Posted: 12:23 pm on November 5th
It is this very uniqueness that I have grown accustomed to in your publication. You are always finding new, innovative and quicker methods of doing work; and, that is what woodworking is all about. Sure we all want to produce the best quality of product possible with the skills we have. However, thanks to your publication, the skills we have are constantly growing.
Thanks for showing this method. I have never been able to afford a "set" of blades to do the "fancy" stuff. With this method, I won't have to.
Posted: 12:21 pm on November 5th
First, the feed rate into the blade is obviously going to be critical for a smooth cut, and since there is nothing but your hand to guide the end to end movement, it seems to contradict the basic rules of working with a table saw and an unobstructed blade. If the workpiece jumps because of a knot or improper feed rate, the only thing controlling the workpiece are fingers that are right out there by the blade. Second, I don't think the blade is designed to receive the workpiece that way, and I wonder what effect that will have on the durability of the blade, especially with harder woods.
For me, I'll spend the extra few minutes to unplug the saw and change blades. A few minutes saved at the cost of a finger seems a bad tradeoff.
Posted: 12:21 pm on November 5th
Apart from keeping your hands safe the main risk is accidentally moving the stock too far forward for each side-cut, thereby accidentally trying to remove too much waste for the side of the blade to cope with safely. When this happens the blade can cause the stock to lift and as it lifts the blade grab the stock and pulls it out of your hand.
Posted: 12:17 pm on November 5th
Is Fine Woodworking concerned with liability issues that might arise from someone claiming "I read it in FW" and becomes injured? Everyone today wants a 100% guarantee for everything. Use common sense and good judgement at all times.
Posted: 12:17 pm on November 5th
Posted: 12:17 pm on November 5th
The other professors were the worst at trying to copy my tricky techniques w/their own minimal/marginal skills. They were very confident, understandably, in their own particular field of expertise which, unfortunately, spilled over into other fields (mine) and to which they had access (the Wood Lab). Some/most of the serious accidents in my lab at the university happened to other teachers using the equipment without proper training and experience and with way too much personal confidence.
Over confidence can be a killer......or at least a finger killer. No fatalities.
I could scan & attach some gruesome photos if you'd like.
Posted: 12:14 pm on November 5th
Posted: 12:04 pm on November 5th
Posted: 12:02 pm on November 5th
I would like to see a better method than a mortising jig on a small drill press for making mortises, maybe using a router or router table covered in the magazine with video support as backup.
Thanks for showing this technique.
Posted: 12:02 pm on November 5th
I would like to see a better method than a mortising jig on a small drill press for making mortises, maybe using a router or router table covered in the magazine with video support as backup.
Thanks for showing this technique.
Posted: 12:02 pm on November 5th
You're in business to show woodworking techniques. Your readers are not preschoolers - they're adults. It's not your job to protect them from themselves. Withholding what you know to be a legitimate way that pro woodworkers work is just foolishness. Show the necessary disclaimers Taunton legal dept. suggests and call it a day.
Posted: 11:54 am on November 5th
If you put this in the magazine, be prepared for some gnashing of teeth - pardon the pun.
Posted: 11:54 am on November 5th
Jack
Posted: 11:45 am on November 5th
Some other commenters mention that this method creates a inherently scalloped surface on the tenon face. I've been curious about this too so i did the math. Given a 10" blade and 1/4" offset between the lateral clean-up cuts, the maximum deviation from flat on the tenon face would 1/640" or .0015625. That's flat enough for me.
Posted: 11:42 am on November 5th
I would not allow a student to use the method as shown in the video. Too many simultaneous or nearly simultaneous motions.
Posted: 11:42 am on November 5th
Posted: 11:40 am on November 5th
Posted: 11:39 am on November 5th
It's true that a skilled woodworker might be able to use this technique for years and never have an accident. But hands do slip, and it only takes one accident to mangle or sever ones fingers. And that could really ruin your day.
Posted: 11:38 am on November 5th
Posted: 11:37 am on November 5th
Interesting that the question follows FW's decision to go ahead and publish this technique in cyberspace, including a well made video. You've answered it already, eh?
Got more questions on other techniques that you've already answered on-line?
Posted: 11:36 am on November 5th
Posted: 11:33 am on November 5th
Have you ever been on a construction site and watched an experienced carpenter do the same things freehand with a worm drive saw. The only control surfaces he has are his hand a sawhorse and his knee.
Confidence and experience and intimate knowledge of ones tooling has to be the deciding factor if you are in doubt .... DON'T DO IT..!
Posted: 11:25 am on November 5th
Posted: 11:25 am on November 5th
Posted: 11:22 am on November 5th
Posted: 11:18 am on November 5th
thanks,
Tom Hazlewood
Posted: 11:16 am on November 5th
It would be more helpful to write the article on the main ways the techique can go wrong.
Posted: 11:15 am on November 5th
I have to admit that I've used handheld circular saws as "rotary rasps" at times, though that was trimming back the entire end of the board rather than trying to take out only a shoulder.
This does feel like something which would be safer in a sled with a stop than on the bare table, to keep the hands clear of the blade. The sled could be equipped with featherboard (or even solid backing block) to help keep the piece flat, and the edge of the sled could be marked with appropriate-size indexes to be gauged against a reference point on the table so each pass takes off the same (known) amount.
If that seems like a reasonable compromise, you can consider this a "Methods Of Work" submission.
Posted: 11:14 am on November 5th
Posted: 11:13 am on November 5th
I have to admit that I've used handheld circular saws as "rotary rasps" at times, though that was trimming back the entire end of the board rather than trying to take out only a shoulder.
This does feel like something which would be safer in a sled with a stop than on the bare table, to keep the hands clear of the blade. The sled could be equipped with featherboard (or even solid backing block) to help keep the piece flat, and the edge of the sled could be marked with appropriate-size indexes to be gauged against a reference point on the table so each pass takes off the same (known) amount.
If that seems like a reasonable compromise, you can consider this a "Methods Of Work" submission.
Posted: 11:13 am on November 5th
Posted: 11:08 am on November 5th
I'm not inclined to suggest it's safe for anyone but me. I do this type of operation, along with other 'questionable' things, every day in my shop. If it doesn't feel right at the time, I don't do it. Some days I'll pass and use a 'slower' technique, because it makes sense to do so, all things considered. I wouldn't use this technique if I were hurried, or trying to take a 'shortcut'. I'd use it because it's efficient, simple, and I'm comfortable doing so.
With re: to FWW liability, or teaching this to 'beginners'... I would hope that a simple disclaimer of 'Hey, we like to show you techniques that master-level woodworkers use, but we neither suggest it nor imply that it's safe for you to use. Use your own head, and make your own decisions' would suffice.
Posted: 11:03 am on November 5th
Posted: 10:58 am on November 5th
Posted: 10:57 am on November 5th
Posted: 10:54 am on November 5th
Posted: 10:54 am on November 5th
Posted: 10:54 am on November 5th
Posted: 10:50 am on November 5th
I've used this technique fairly frequently with no problems. I've also generated cove mouldings and raised panels using a similar technique. One thing I discovered along the way is that, especially for things like raised panels and cove moulding, a dado head, especially an adjustable 8- or 16-tooth style, works much better than a saw blade, though it may well be somewhat more dangerous.
As for publishing this technique? As many have pointed out, it's a moot point. You already have.
Posted: 10:47 am on November 5th
Also, I never have just one tenon to do, it is usually 8-12 at a time. To me it is worth seting up the tenoning jig or dado set.
Trust me, the few seconds I thought I would save by reaching across the blade to get another peice was more than offset by the trip to the ER, the months of NOT being able to wood work, and the years of still having pain. Plus, I can't reach the radio controls on my car steering wheel anymore ;)
I wouldn't publish this, there are safer ways.
Posted: 10:45 am on November 5th
Perhaps it could be run in an article that is titled
"unsafe techniques that work" or and article that is titled"questionable table saw techniques"or "techniques for pros beginners beware" or as others have suggested put a safety rating on techniques from 1-10 .FWW has a safety and disclaimer already and you have run the video already so If FWW was really concerned about the liability you would not have put it on line in the first place.
Posted: 10:42 am on November 5th
Posted: 10:41 am on November 5th
Posted: 10:40 am on November 5th
Posted: 10:40 am on November 5th
Posted: 10:38 am on November 5th
Suggest the article should highlight the SAFE way to do this and also the less-safe practices, such as the one the reader mentioned of making several spaced cuts and risking thrown chucks when any side-cutting is attempted.
A variation that is possible (I suppose) is simply to slide the work sideways on the miter gauge by one kerf-width on each straight pass. Sounds very safe if you advance the work no more than a kerf-width, but who could guarantee that? And probably slower.
Posted: 10:33 am on November 5th
As noted by other comments above, this and any other table saw procedure would certainly be less likely to cause injury with a SawStop. Fine Woodworking might want to consider presenting this technique as part of a series in which readers are challenged to create jigs or safety equipment/procedures that would eliminate operator blade exposure time. However, my understanding is that even a SawStop could not prevent a carbide tip from breaking off at high speed due to side pressure it was not designed to with stand. Absent blades designed to operate this way, I would not be willing to do this without some assurance that the blade can perform.
Posted: 10:30 am on November 5th
That's my 2 cents
Posted: 10:30 am on November 5th
To other comments about level of experience required - all power tools take experience and care! The router is the most dangerous tool in any shop (and the nosiest and messiest)! Drum sanders and belt sanders constantly eat finger tips! We pick too much on one of the safest power tools in the shop because of carelessness and lack of proper use. Its like the large number of people that mow over their own feet - DUMB!
Posted: 10:19 am on November 5th
Posted: 10:18 am on November 5th
It's a great technique and it's one of the first thing I teached myself years ago including the about the same technique as edging a raised panel on the same table saw. Thanks for sharing.
And by the way, who is talking about safety on a table saw? What country again was the last one in the whole world that came with a riving knife on a table saw?
Posted: 10:07 am on November 5th
Posted: 10:06 am on November 5th
Posted: 10:02 am on November 5th
Posted: 9:59 am on November 5th
Posted: 9:58 am on November 5th
submitted plenty of good information.
Posted: 9:56 am on November 5th
Posted: 9:55 am on November 5th
Posted: 9:53 am on November 5th
out the posssible dangers and how to avoid them.
E Neese
Posted: 9:47 am on November 5th
out the posssible dangers and how to avoid them.
E Neese
Posted: 9:47 am on November 5th
It would be interesting to see if any blade manufacturer's lawyer would let them make any comment other than "not recommended". Tooth wear would be uneven, but if you're spending any significant amount of time using this method, you need to consider some other technique.
As for whether or not you should publish this technique, I think you just did.
Posted: 9:47 am on November 5th
Posted: 9:41 am on November 5th
Posted: 9:35 am on November 5th
I'd do an article that explores every method of M&T joinery. Each method could have a short video demonstrating the technique, and 3 paragraphs (intro, explanation [maybe with bullet points], conclusion) explaining how it's done & benefits & shortcomings & possible enhancements to augment any of the qualities indicated in the chart (see next sentence). And, you should include a chart that does a side-by-side executive comparison summary to indicate safety, ease, complexity, speed, accuracy, etc. If you do it this way, you can include LOTS of techniques that might not otherwise be considered "right" for woodworkers in various stages of skill development, but that would become a reference that would enable us to grow from/into different techniques based upon what's "right" for the situation.
That said, for just this one method, some kind of dual-direction sliding miter jig would be a welcome safety addition. I'd challenge you to design that piece of safety equipment so that it could be used on both the tablesaw and the router table.
Posted: 9:34 am on November 5th
Posted: 9:33 am on November 5th
As this publication used to be geared toward the professional, this would not have been a question - except those who constantly railed against using power tools, and would deride a tablesaw as a carpenter's tool.
Understanding how the cutting action takes place, and being aware of the dynamics is critical for both safety and fine results. It is up to each of us to understand and apply that information.
I have a young grandson who I would trust to be safe If I taught him this technique, but I know his dad would probably cut off his fingers and end up with the cut-off parts stuck in his eyes. We are working with hazards all around us and those that can't adapt maybe should do something else.
Posted: 9:25 am on November 5th
Posted: 9:19 am on November 5th
Posted: 9:19 am on November 5th
cuts every 1/4" before starting the 90 degres cuts. This would reduce the side stresses on the blade and would increase the safety because the wood will split because of the multiple cuts. The result should be the same but safer
CoDesPro
Posted: 9:19 am on November 5th
Posted: 9:18 am on November 5th
A beginner might take too big of a bite on the lateral cut, and if not holding the work very tightly to the mitre, the piece could cock, flip out of his hands, and maybe fly off harmlessly, maybe push him into the blade.
Also, all that moving around is apt to confuse a beginner, and confusion leads to missing body parts. Even your expert demonstrator seems to have lost track of where he was in the process, a couple of times.
SO... if you do publish it, CYA with a very clear disclaimer.
Posted: 9:17 am on November 5th
Posted: 9:09 am on November 5th
Posted: 9:05 am on November 5th
Posted: 9:04 am on November 5th
Posted: 9:01 am on November 5th
Posted: 9:00 am on November 5th
I see this technique only saving time if you have a few tenons to cut. I could cut a tenon with a dado stack faster, but the setup time would be slow. If I was cutting 10 tenons I think this technique would actually be slower than the traditional dado blades.
Regarding printing it....50/50. I'm the editor of Canadian Woodworking Magazine. I would go for it, but I would give a warning off the top regarding who it is best used by, and in what situation. If performed right it's no more dangerous than many other techniques. It does get people talking though, and that's always fun!
Posted: 8:59 am on November 5th
The more I think about presenting this method to everyone, the more I'm leaning towards NO.
Posted: 8:58 am on November 5th
in a sue-happy world, the part that carries weight in court is often: "They showed it to me, I tried it and I got hurt."...and that part is already in place.
that horse has left the barn and is on the ship that's already sailed.
regarding whether or not you should publish it...you already have.
Posted: 8:52 am on November 5th
Posted: 8:52 am on November 5th
I prefer his method to the one I usually use which is to make a dozen or so passes and then clean it up by passing it over the blade. This produces small enough pieces of waste that kick-back is not an issue, BUT you end up with dozens of tiny bits of off-cut waste flying at you.
I think any experienced wood-worker capable of pulling this off safely, has probably already come up with this one on their own, and perhaps that should answer your question.
Posted: 8:51 am on November 5th
I would like to see if someone can install a strain gage on the blade and determine the stress and lateral forces on the bearing. Ball bearings can take a certain amount of load. Some more than others depending upon the inner and outer race contact angles. If the load was exceeded, it would make it a pretty simple decision. Statements without facts are just opinions.
Posted: 8:49 am on November 5th
Posted: 8:48 am on November 5th
You are teaching woodworking in a vast classroom, and have no control over who makes up your student body, or how much attention they are paying. It would be reckless to present this technique in such a context--I can't imagine why you would even consider it.
Posted: 8:46 am on November 5th
Why is it that I'm torn between the YES and NO? It's because I've run across many "woodworkers" who are NOT comfortable at the saw. They've got the money to buy the fine equipment, but they don't have the experience or exposure to problem-solving that build up like coats of lacquer on yout skill level. Add to that today's outrageous lawsuit environment where no one is responsible for his own actions anymore, I'd say, "protect yourself" and don't bother to publish it. You've reached the audience most likely to benefit from it here anyway.
Posted: 8:45 am on November 5th
My 2Ct's
Regis
Posted: 8:40 am on November 5th
Posted: 8:39 am on November 5th
Ok enough philosophy, never is it a good idea to use the miter gauge along with the fence. Since that blade moves so very fast if the blade and fence are our of parallel, by even millimeters, the wood could bind hurting operator and saw alike. Worse yet, if the wood is not held very firm against table and miter fence it could strike the blade out of parallel and throw the wood. Also, pushing against the side of the blade while it is spinning damages the saw's bearings and can work to knock it out of alignment with the fence thereby leading to the problem just mentioned. All of these risks elevate as the blade dulls, which even with carbide happens faster than we'd like when working with fine well figured hardwoods.
We should not be inviting impatience into our shops. There are plenty of techniques that produce fine tenons in a short time, safely! Take a stance and tell your readers to avoid the unsafe ones even if some of your readers view the risk as less likely.
Posted: 8:37 am on November 5th
Posted: 8:34 am on November 5th
Posted: 8:31 am on November 5th
Posted: 8:31 am on November 5th
To amplify the difference between the skeptics of a "proper" fit, and the "sloppy" speed freaks, why not do an "engineered" runoff? A tenon made exactly like the video VS one with carefully crafted and loving tenderness (read:slow) which yield a perfect .002" hand-honed fit to its mortise.
Do this for a couple of hundred joints that are then glued-up. After the glue dries and all samples are destroyed with calibrated presses, let's see if there is an iota of difference. My guess is there will be a measurable, but insignificant, difference.
That result would give both sides a victory, and yet leave the issue of safety an open matter, just as it is (and will be) for every other table saw operation. Can't stop that, eh?
If joint strength is non-discriminating, the entire topic becomes an esoteric discussion of beauty and hand work VS a few minutes of set-up times avoided, at some added risk of safety.
I've always wondered about the sloppy VS 'perfect-fit' mortise and tenon strength test. What does a poll of FW authors and experts say? Any empirical data on tenon strength to share?
Posted: 8:29 am on November 5th
Posted: 8:29 am on November 5th
Posted: 8:26 am on November 5th
Posted: 8:25 am on November 5th
Posted: 8:25 am on November 5th
Posted: 8:21 am on November 5th
I do a lot of furniture repair. Therefore this procedure is saves me a lot of time because I am cutting only one or two tenons at a time for a replacement part. If cutting multiple tenons I think it would be worth installing a dado blade because the time for installation it would be divided among all the tenons.
I think this procedure is appropriate for Fine Woodworking as long as the importance of taking light cuts is emphasized. Also if it is possible to instruct readers on how to ease into a procedure such as this and if there is any apprehension about doing it, or any other procedure, then don't use it.
Posted: 8:17 am on November 5th
Posted: 8:10 am on November 5th
Posted: 8:03 am on November 5th
Posted: 8:03 am on November 5th
Posted: 8:00 am on November 5th
The last time I was cutting tenons, this method occurred to me as a potential way forward. However, rather than introducing the wood at the front of the blade, I was going to push it through the crest of the blade (after already having "nibbled" much of the material away through convention tenoning passes on the saw). I didn't b/c I it just didn't feel right, and I decided to do the rest of my tenons by cutting the shoulders on the table saw and then the cheeks with my hand saw (which is more fun and less dangerous). My bottom line: show people how to do dangerous things correctly and as safely as possible, instead of having them try some cowboy maneuver without the benefit of your advice.
Posted: 7:59 am on November 5th
Teaching it or even showing it was a mistake. Your next question should be how many of you were injured using that technique. As someone else said just because you did it without being hurt for 40 years does not make it right. Just means you were lucky.
Like many others noted this is not a new technique to me. It was taught in high school shop long long ago. It should have stayed in the history books with pictures of woodworkers without fingers...
Posted: 7:55 am on November 5th
Posted: 7:55 am on November 5th
What a waste fo money!
Posted: 7:47 am on November 5th
Posted: 7:46 am on November 5th
If you want to use a table saw, I think a tenoning jig is a better solution.
I personally use a shaper. Others may prefer hand tools. I am dismayed again to see blatantly unsafe practices in FWW videos, with no blade guard, and no spacer block on the fence. Admittedly the table mounted blade guard would be a liability, and It's been pretty well replaced by a suspended one w/ a dust port in my shop. If you're going to say safety comes first, then demonstrate what that looks like.
Posted: 7:45 am on November 5th
I think that publishing techniques like this is reasonable and prudent. There is always an element of danger when using power tools. Letting people know about different ways to enhance their skills and alternative ways to craft projects is what keeps Fine Woodworking in business. At least, it is why I keep coming back.
Posted: 7:45 am on November 5th
Posted: 7:45 am on November 5th
The first safety tip here is a sharp blade. Second is your machine is in great working order. Then it's the operator. In this case all the above is in check.
I believe that FW had an article about cove cutting on a tablesaw where you set up a diagonal fence and push material along it while making repeated shallow cuts until you reach the desired depth and width of cove.
I hope most would agree that accidents are caused by the operator not the machine whether it's in your car, hunting or in your shop. Cars, guns and power equipment don't kill, it's the person handling it.
I suppose that FW would have to get their "lawyers" involved in order to print this article and to me that is a real crime.
Posted: 7:43 am on November 5th
Posted: 7:41 am on November 5th
Secondly, pushing the blade sideways will spoil the blade bearings.
It takes hardly more time to use a light sled with proper hinge-removable(!) stop-block and pushing it through several times, moving the wood each time a few mm towards the left (away from the blade), afterwards cleaning-up with chisel, file or sandpaper if necessary. Excellent jigs have been described in various issues of FWW that promote safe practice. They work quicker BECAUSE they are safer!
My suggestion: ignore Chris Becksvoort's "technique" even if it works for him!
Posted: 7:41 am on November 5th
Posted: 7:35 am on November 5th
Posted: 7:34 am on November 5th
Why? Because kids are inherently impatient. They'll push it too hard, too fast and I'll watch the piece fly across the room (or worse). If you're an impatient person, this will happen to you as well. And since this is billed as a quick tenon procedure, impatient people will be drawn to it.
Leave it out.
Posted: 7:30 am on November 5th
This seems unsafe to me and is using the table saw and blade in ways it is NOT designed to be used creating an unsafe process and procedure.
Posted: 7:30 am on November 5th
Posted: 7:27 am on November 5th
Posted: 7:25 am on November 5th
Posted: 7:24 am on November 5th
Posted: 7:24 am on November 5th
Posted: 7:22 am on November 5th
Posted: 7:14 am on November 5th
Posted: 7:10 am on November 5th
I'll be trying the technique next time I do a tenon. Sure beats setting up a stacked dado set.
Posted: 7:09 am on November 5th
Posted: 7:09 am on November 5th
Posted: 7:09 am on November 5th
Posted: 7:07 am on November 5th
This technique breaks many of the "cardinal" rules of safety when using a table saw, namely making simultaneous use of the fence and mitre gauge. Combined with the fact that you are having to provide pressure laterally towards the blade in order to slide the wood along the mitre gauge only increases the probability of an incident that results in guiding your fingers into the blade.
I tend to use a dado to slightly oversize my tenons, and then clean them up with handplane. Really quick, can achieve a tight and clean joint, and I know I'm going to walk away from my hours in the shop with all fingers still fully intact.
Even on my SawStop, it's not that big a deal to swap out for a dado. Takes all of 2 or 3 minutes, including swapping the brake cartridge. Folks who don't have a SawStop have even fewer steps to take, and can proceed even more quickly.
Are 2 minutes really that big a deal now?
Josh
Posted: 7:07 am on November 5th
Posted: 7:06 am on November 5th
Yes I think it would be essential to point out the care needed to use the technique safely, and any description in print needs to be detailed and explicit.
Obviously blades and bearings etc are not designed for large lateral loads, however used with care it seems that this is unlikely to place any more lateral load on a blade than carrying out some of the more tricky longer rip cuts where maintaining a perfectly square feed can be difficult. Certainly no more than that from performing cove cuts.
As to quality of finish, I suspect that the concerns over flatness of the result may be more theoretical than practical, especially when making passes with the typical size of table saw blade. (My back of envelope calculation suggests that for a 5mm advance of the work there is a 0.1mm difference in blade height from the apex to the trailing arc on a 10" blade. The next arc will intersect with the first and reduce that difference further). A quick lick with a shoulder plane would soon fix that level of imperfection. A second "shoulder cut" made half way down the tenon after it has been cut would also give a quick visual indication of any surface irregularity.
Posted: 7:03 am on November 5th
Posted: 7:02 am on November 5th
Indeed, repeating this technique over and over will inevitably lead the operator to go faster and eating up more material with each pass, and that's when it gets dangerous.
For cutting a lot of tenons, the time spent to set up a proper jig is quickly gained back as it takes much less than 30 seconds to cut each face and shoulder of the tenon. It also makes for more precise tenons.
In fact, the technique shown here, if not done slowly and carefully, will give tenons with a slightly ridged surface, not a flat one. Therefore, the surface contact between tenon and mortise is uneven, making for a poor gluing surface and a much lower joint strength.
My two cents of advise...
Posted: 7:01 am on November 5th
Safety is in the hands of the worker - not the method of work.
I'd move my hands back from the cutting area more - but the fact of the matter is the blade is BELOW the top surface.
Print it....
Posted: 6:59 am on November 5th
Posted: 6:56 am on November 5th
Posted: 6:52 am on November 5th
This is a technique for people with more projects than time available to them. That's not me, or any of the hobbyist woodworkers I know. Why would I want to work this fast?
It requires a tablesaw. I hate tablesaws. How many woodworkers have amputatations from handsaws, bowsaws, chisels or bandsaws? I detest having a tool dictate the way I work.
Your reluctance to print this article is a gut check.
Are you really under that much pressure to sell power tools?
Posted: 6:50 am on November 5th
If I were to try this technique, and I undoubtedly will at some point, I would add an extension of scrap wood to the miter gauge that would back up the stock nearly to the fence. That would help counteract the rotational forces that feeding the stock into the blade sets up.
The prospect of the blade biting off too much and catching the wood, and then rotating off the face of the miter gauge, would seem to be one of the potential problems with the setup. Adding a backer would help alleviate at least one of the safety issues.
Zolton
Posted: 6:48 am on November 5th
Posted: 6:40 am on November 5th
Michael
Posted: 6:37 am on November 5th
Posted: 6:33 am on November 5th
PS. cutting tenons with a sharp tenon saw is just as fast, clean and safer with no high pitch noise and saw dust flying everywhere.
Posted: 6:28 am on November 5th
Surprises me that Chris would settle for a "quick" method of cutting tenons, when he cuts his dovetails by hand. Cutting tenons by hand is easier and quicker than cutting dovetails.
Posted: 6:27 am on November 5th
You should never cross cut a long board with the end rubbing the fence. That cut should always be made with a step attached to the fence so the end of the board clears the step before it touches the blade.
It may not happen often but a dangerous binding of the blade can happen very easily.
Posted: 6:25 am on November 5th
Posted: 6:08 am on November 5th
But this one isn't the right one for this job.
The first set up would be to cut the cheeks of the tennon, with the part in the vertical position, then the shoulder cuts in the horizontal position. This can be done safely with a follow up piece of wood with the possibility of using an extension fence for support.
When I have a tennon to cut, there are usually many others to cut, the set up I'm talking about is easy, safe, fast and accurate, and doesn't put side stress on the TS bearings.
Any setup time is divided by many tennons to cut and is probably faster per tennon than the technique shown in the video.
The repetitive (cove cuts) in the video leave a rough and uneven surface, which may be OK for a closed tennon, but a smoothe surface is a better glue surface.
Like I said, there is a use for many different techniques, but the one shown in the video to cut tennons, "doesn't make the grade for me".
Birdie Miller
Posted: 6:04 am on November 5th
Posted: 5:59 am on November 5th
Posted: 5:56 am on November 5th
Posted: 5:55 am on November 5th
Posted: 5:52 am on November 5th
Posted: 4:26 am on November 5th
The shown method is used only too clean up the tenon.
This type of tips should be a part of Fine Woodworking Magazine
Posted: 3:46 am on November 5th
Posted: 3:31 am on November 5th
Three quick (repetion) operations using x3 settings and x6 cuts on your bandsaw get you a neat tenon...
Are you really in that much of a hurry that you need take risks?
Here in UK we use splitters and guards for nearly all our cuts. no Dadoes as our saws won't allow them... in spite of this we get the job done!
Your choice folks!
Posted: 3:05 am on November 5th
Of course I use a saw with a sliding table so I push into the cross fence which feels more secure. I wouldn't like to try it with a mitre gauge.
I usually make a few more cross cuts before cleaning off the excess material, probably because I'm working with very hard and cranky Australian timbers.
The one caution I would add is, if you are machining large or heavy pieces, beware of nudging the fence over with the repetitive taps from the end of the tenon. I've sometimes found that my shoulder cuts are out of line because I've nudged the fence over a little during the process.
As for safety, this feels safer to me than a lot of the convoluted tenoning jigs I've seen over the years in Fine Woodworking. As others have mentioned, take very small nibbles each time. The saw will quickly let you know if you attempt to trim too much!
Posted: 2:37 am on November 5th
Posted: 2:36 am on November 5th
Posted: 2:23 am on November 5th
It belongs in the pages of FWW
Posted: 1:33 am on November 5th
You still need to use it safely, but there is a lot less risk to fingers than in the video. It may not be an option for some, but if you have a suitable router it has a big safety advantage.
Posted: 1:26 am on November 5th
I think it gives novices and the generally inexperienced the idea that Fine Woodworking stands behind this as a safe practice rergardless of level of experience.
I believe you need to give this more thought as it concerns your liability the first time an inexplerienced person attempts this and has a tragic experience.
I have accomplished this procedure with success but only after I gave it a great deal of thougth and actually made a dry run (Saw was off) to examine my hand and finger positions relative to the blade.
The cat is already out of the bag.
Posted: 11:45 pm on November 4th
Posted: 10:45 pm on November 4th
As for me, I'll be leaving this method for others to hazard.
Posted: 10:43 pm on November 4th
Posted: 9:12 pm on November 4th
However I wouldn't consider this to be "Fine Woodworking " , seems more like production woodworking to me . I'm sure a CNC machine can route a tenon faster than that but if I am going to pay a master craftsman to make something for me I want traditional I doubt the Shakers that Mr. Bescksvroot specializes in emulating used this technique.
Posted: 7:43 pm on November 4th
Posted: 7:00 pm on November 4th
As with any other method of utilizing a powered tool, this one can remove human body parts when practiced by one inexperienced or untrained. There are specific safety violations (see below), but my foremost objection lies in encouraging readers to "do it the wrong way" in hopes that some may eventually come to realize that their joints aren't any good.
As to having ones' digits in close proximity to the blade - - how does one perform accurate and delicate work without such closeness? That's about learning and practicing good technique with fanatic diligence. Otherwise, we lose body parts. Good methods, good sense, and enough smarts to use both are the basic prerequisites for safe work.
Classic techniques for tenon-making include hand-planing to fit, so as to maximize joint efficiency. The technique demonstrated for this table saw routine can only leave a surface that's not flat - it's not good practice, and is likely to lead all but the most experienced worker to produce a surface that only fits the mortise at 0.002" clearance in a couple of places. It may, however, suffice as a rough-sizing operation provided the operator has sufficient experience to visualize and correct a surface that's not only rough, but not planar (that is, it's curved, not flat.)
There are references in some letters to cove-making jigs, but that technique, if exercised at proper speed, can yield a surface with virtually no imperfections because the blade is in near-parallel orientation and is guaranteed to contact the entirety of the surface similarly if the workpiece is not advanced too quickly - 100% of the workpiece is made to glide at a very shallow angle to the blade angle with the blade.
Conversely, the feed method for the table saw tenon relies upon unregulated manual advance for each successive cut, which guarantees flaky surface character. At 90 degrees, as in the proposed method, the results can never be made to yield a 100% contact cut unless the manual advancement method is controlled at something like exactly 0.020" per pass - good luck with that. As well, the non-flat-bottom characteristic of tablesaw blades (other than dado blades with straight-face chippers)also guarantees that the surface rendered cannot possibly be even close to flat enough for a glue joint.
The practice of simultaneously guiding against both fence and miter gauge face is an open invitation to trouble - the slightest problem can instantly escalate into a finger-buster. Stoopid, in my opinion.
The best bet is to make your own tenoning jig if you can't afford a good one, then cut 'em right and plane to fit. If you've the patience, they can be rough-cut with a tenoning jig and then recut to near-perfection with a dado blade, with only minor planing adjustments left to complete. The method is great for large numbers of identical tenons, but for one or two it's just a s fast to use a marking device, a vise, and a fine backsaw.
Finally, I suggest that FWW forget about trying to teach every yahoo everything he needs to know to make toothpicks and sawdust. Either you're about fine woodworking, or you're competing with the handy-homey rags - your choice. Stick with handy-homey, and watch my subscription evaporate.
Posted: 6:05 pm on November 4th
If you are the kind of person that needs a colonoscopy to find your head, then this cut is NOT for you.
Posted: 5:26 pm on November 4th
Posted: 5:21 pm on November 4th
Posted: 4:59 pm on November 4th
History has taught me that safe practices are the first thing to be tossed when greater 'efficiency' is wanted.
Thanks for the tip, but I'll pass.
Frank
Posted: 4:21 pm on November 4th
Posted: 4:04 pm on November 4th
Posted: 3:41 pm on November 4th
Posted: 11:59 am on November 4th
Posted: 11:12 am on November 4th
Posted: 11:00 am on November 4th
keeping in mind the Safety aspect. i on the other hand, have repetitiously pushed & pulled the piece back & forth & fwd @ the same time,... "get er done" !
BTW,. have been searching jewelery box plans, made a few in the late 80's-eaarly 90's that was a plan from FW with a rolltop & drawer, have not been able to locate? now searching for small 2 door & 2 drawer, appox 16"H X 8ish D X 12ish W
any ideas ? or must i design/build my own?
Posted: 9:21 am on November 4th
Having said that, and having been a paid subscriber since the beginning, I can't help but observe what seems to be an increasing tendency for FWW to serve warmed over content, and this appears to be more of the same. Leading viewers to believe that you will be using their 'opinion' as to the use of what amounts to a liability issue for you is suspect at best ... here's hoping neither party is that naive.
You asked for opinions. Mine: ask your legal department, that's what you pay them for.
And speaking of paying. I don't mind paying for a subscription fee, but having paid you what you asked to view your content, you need to reconsider forcing a paid subscriber to sit through even 15 seconds of commercials before a video begins.
If you insist on aligning your business model with the cable TV industry, as with both the above issues , there will be no further renewal from this subscriber when my current subscription expires.
Posted: 9:17 am on November 4th
experience, as well as, comfort level they have with their machinery. If you have taken the time to learn how to operate your machinery properly then "you" will know what it is capable of doing.
Thanks for sharing and I know I would not have a problem with seeing this in your pages, but I am not the "safety police" either ; )
Cheers
Posted: 8:46 am on November 4th
Posted: 8:46 am on November 4th
It would also help, I think, to explain why this technique might seem unsafe, but it's OK to cut a cove on the tablesaw in a series of light passes across the blade.
Finally, would the speed tenon be safer if it were done with a crosscut sled and stop block instead of with a miter gauge and rip fence together?
Posted: 8:33 am on November 4th
Posted: 6:54 am on November 4th
Initially, I was taken aback. And, if the school shop hadn't been equipped with a Saw Stop, I might not have tried it.
Since then, I've used the technique infrequently (not a professional and lots of casework recently). I believe the method to be safe but requires care and attention; The same can be said of all operations at the table saw.
Beyond speed, this technique is excellent for tuning the tenon that last few 1/64's to get a snug fit. When batch cutting tenons, I cut oversize and then come back and fit mortise-by-mortise. (I don't own a shoulder plane, nor feel I need one.)
Posted: 6:50 am on November 4th
Most importantly, the article doesn't explain why this technique is unsafe. Also, it doesn't provide any tips on how to do this safely. I think it is irresponsible to show the process without discussing why you think it's unsafe or techniques to use to make it safer. Somebody is going to read your little blurb, go try it out, and cut off a few fingers. Hope you sleep well tonight.
Why is this unsafe? Because you are pushing your hand toward the saw. You slip and your fingers end up in the saw.
Here is what you need to do to use this technique safely:
First, I've a very healthy respect for the saw (so much so that I now own a SawStop.)
Second, I don't do this free handed. I brace the palm of my hand on the miter gauge to guide the wood. The other hand, pushing the wood toward the saw, is holding the far end of the wood, no where near the saw.
Lastly, I don't try to rush it. I only take a little off at a time. If you take too big of a cut, you're pushing harder and your hand might slipe toward the saw, not a safe condition.
Posted: 1:07 am on November 4th
It's bad to withhold techniques because you're afraid of litigation.
Now that you posted this video of the technique in use safely, and you bring up the question of "safety" you can prove in any "reasonable" court that you are not liable for injuries someone suffers while using it.
Now, just find a "reasonable" court.
The Ryobi suit was heavily influenced by behind-the-scenes negotiations carried out by representatives of a famous saw-safety device. Because the safety device was created by a lawyer, and because that lawyer has connections to powerful allies in congress, the Ryobi suit was engineered to scare other manufacturers into kowtowing to new regulations.
Now, here are four pertinent facts:
It is a fact that the famous safety device works, in dry wood. Yay.
There are new saw safety devices on the horizon that work as well or better.
Nothing will ever replace common sense and caution.
Many of us have cut tenons like this for decades and never had a problem.
_______
So Dear ASA, Don't worry... You will still get your advertising bucks from the famous saw safety-device company. If an unwary woodworker injures himself while trying this for the first time, lawyers will try to attack the saw manufacturer, not magazine publishers or videographers or editors. You guys are their friends! Other manufacturers are competition. Besides, large tool manufacturers have deeper pockets, so that's who lawyers will attack.
You can show this video to any reasonable court, so long as the jury isn't stupid, the lawyers are all ethical and the judge isn't bought.
Unless the entire legal system is rigged, How hard could that be?
I mean, unless someone got into high public office through an illegal last-minute ruling by the supreme court, or the courts decide something absurd like "corporations are people" you can still trust our legal system. It's not like we see MAJOR crimes committed by the financial industry going totally unpunished, right? Unless we see police getting away with beating, shooting, pepper-spraying, & tazing peaceful citizens the courts should still be fair, ...right?
So long as we don't see any of the above-mentioned corruption in our legal-system, you should be OK.
Go ahead. Show the video.
Good luck.
Posted: 12:49 am on November 4th
Posted: 12:45 am on November 4th
Posted: 9:39 pm on November 3rd
I would not recommend a tired or inexperienced woodworker even consider the attempt. Light passes and constant attention is required. If you have lots of tenons to cut, set up and do it in a more controlled manner. Even as a pro tip with tons of cautions it could still be tempting to an over confidant hobbyist.
In my shop techniques like this are labeled
" Watch this but don't try it! "
Posted: 8:37 pm on November 3rd
Posted: 7:13 pm on November 3rd
Posted: 6:55 pm on November 3rd
I've been working wood as a hobbyist for over 15 years. I've used a similiar technique when I just need a single tenon. But I would NOT show this technique to an inexperienced woodworker.
The inexperienced tend to fear the tablesaw; that's probably a good thing, until they have enough experience for that fear to devolve to respect.
After a while, the clumsiness of where to put your hands and fingers disappears; one learns how much pressure to use (both down and back), without thinking; body mechanics become second nature; dexterity is developed for handling typically sized pieces of wood. Most importantly, mistakes happen and one acquires JUDGEMENT.
But no one starts out with this skill set, and it takes many hours of working the craft to gain these skills. As a hobbyist with limited time to devote, it took probably a decade before I started doing something like that. I think I'm probably a typical reader.
In an article, you might want to point to a website video of the technique, but with a sterm disclaimer that this is an advanced technique. And be explicit: "If you have less than 500 hand-on hours using your tablesaw, DO NOT TRY THIS AT HOME!"
Posted: 6:52 pm on November 3rd
I know students who have cut themselves on a freshly honed chisel but by no means should we ever stop teaching how to obtain a razor sharp edge. Accidents happen when you underestimate the tool whether it be the sharpness or the power. Notice that the technique requires you to move slow and take very small cuts. If Asa had just gone full bore taking a heavy cut this video would be much more graphic. He respects the table saw without fearing it and produced a great tenon.
By working with wood we have all chosen to be around sharp objects, most of which spin at high speeds. Be confident and stay in control. If the situation is preventing you from being those (i.e. work piece slipping off the mitre fence) then adjust accordingly so that it doesn't.
I can see this technique being very helpful to both hobbyist and professional. It saves time which is always on the mind of the pro and it gives the hobbyist another option for making tenons that doesn't cost hundreds of dollars.
Posted: 6:28 pm on November 3rd
- taking too much off in a single pass creating excess side deflection on the blade (have the blade manufacturers weighed in on this?)
- the piece accidentally coming off the mitre fence when passing over the blade and getting pulled from the operator's hands with the potential of hand to blade contact or getting hit with a wooden rocket
- what, if any, issues did Chris Becksvoort experience when he first adopted this technique?
According to recent articles in FW and other news sources, tablesaw accidents cause billions of dollars in injury every year. Based on this fact and combined with the recent lawsuit and damage award (Ryobi), is it really worth promoting this technique for the sake of saving the average user 10-15 minutes worth of setup.
I suspect that the professional woodworker who would benefit the most from the time saving aspect of this is either already aware of this technique or has developed their own.
Out of an abundance of caution, and the difficulty I see of teaching this technique properly through the pages of FW, I would recommend this not be included in a future issue. But then again, my family have always referred to me as Mr. Safety!
Posted: 2:57 pm on November 3rd
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