I’m planning to build some utility room cabs out of melamine covered fiberboard.
I’ve never worked with MDF because I can’t find a screw with which to join it.
Today I picked up an MDF scrap at Lowes and took it home to try joining it with my Kreg pocket hole jig using the recommended SM C125 (coarse 1 1/4″) screw.
I drove four screws (two at each end) to join two 6″X10″ pieces of the MDF.
All four screws kept turning and never “bit”.
I took the joined pieces and pulled them apart with just a little effort.
Is there a screw that will hold this material? Or is there some other way to join it?
Thanks,
Bill
Replies
I use regular wood screws in MDF all the time. You have to be careful around edges so that you don't split them out and pre drilling id a must. Don't over tighten your screws or the will strip out. There are screws out there for MDF the have two treads one that is very fine and one that is very course. The fine tread runs between the course. I have never found them to be worth the extra few dollars.
Scott C. Frankland
Scott's WOODWORKING Website
"He who has the most tools may not win the race of life but he will sure make his wife look like a good catch when she goes to move on."
Scott.. thanks.. I'll try those.
I sure hate to hear that you have to pre drill.
I just this minute thought that I might add biscuits to the joinery, too. That might help some.
Thanks again,
Bill
Confirmat screws are designed for particleboard and MDF. Check out McFeeleys
http://www.mcfeelys.com/
look up Confirmat screws. They will have everything you need, screws, and the special stepped drill bit.
J.P.
two best ways of joining mdf are biscuits and confirmat screws
caulking is not a piece of trim
What are confirmat screws.. and where can I get them?
Thanks,
Bill
Got to the link below and you can see what confirmat screws are all about. They are not cheap compared to regular screws but they do work. I still find regular screws work as good with a bit of care when assembling projects.
http://store.yahoo.com/squaredrive/fasteners-screws-specialty-screws-european-cabinetry-screws-confirmat-style-screws.htmlScott C. Frankland
Scott's WOODWORKING Website"He who has the most tools may not win the race of life but he will sure make his wife look like a good catch when she goes to move on."
Thanks, Scott.. ordered the 5x40mm screw kit w/caps and bits.. truly appreciate the help.
BIll
Confirmats are great, or the type of screw Scott mentioned.....I disagree completely on how good they are though. They are sometimes called hi-lo or lo-root screws, sometimes chipboard screws or production screws. Most have nibs on the underside of the head so they will countersink themselves. I think they are great; never had a problem, they're not expensive, and they are head and shoulders above a traditional wood screw for anything wood related (solid wood too). I wouldn't ever consider using anything but this type of screw now, except for very fancy stuff where you want brass and slotted heads. I like Confirmats too, but they're more finiscky and considerably more expensive.cabinetmaker/college woodworking instructor. Cape Breton, N.S
How did you fair out with the storm last week. We got nailed pretty hard up in this neck of the woods. I have been using those screws for years but haven't seen them around the last couple of times I have been out to the hardware store. I see the slot for them so I am hoping them are just out of them. I to use them in just about everything with hardly any problems, it must be do to the fact that we Atlantic Canadians are just better at screwing.Scott C. Frankland
Scott's WOODWORKING Website"He who has the most tools may not win the race of life but he will sure make his wife look like a good catch when she goes to move on."
We got hit, but not like you guys.....whole house was down with flu/colds anyways, so a couple of days watching the snow fall wasn't too bad....
If you're looking for screws, try Atlantic Hardware or Mill Supply in Dartmouth....industrial suppliers to the cabinet shops. They will have them in stock, good quality (plus anything else you may need), at decent prices. $15-20 a thou, something like that, depending on the size.
Not gonna touch the 'screwing' opinion!cabinetmaker/college woodworking instructor. Cape Breton, N.S
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