Replies

1. 
   Dave45 | Nov 17, 2008 07:38am | #1

   Can you post a picture of your marks? I often see closely spaced "waves" on store bought dimensioned lumber. I've been told that they're the result of surface planing while feeding too fast. (Lumber mills use power feeders on their planers.) The "waves" are where the planer blades scooped out a slice of wood.

2. 
   gb93433 | Nov 17, 2008 07:46am | #2

   They can come from the sanding process too. What kind of a sander do you have?

1. 
   woodworker57 | Nov 18, 2008 02:55am | #6

   I have been using a friends "General " dual overhead drum sander.  ---WW 57

3. 
   ring | Nov 17, 2008 08:35am | #3

   We need a photo of what you're talking about.

   David Ring

   http://www.touchwood.co.il/?id=1&lang=e

1. 
   woodworker57 | Nov 18, 2008 02:56am | #7

   I will try to get one , a little bit technically challenged, but I think my wife can do it.---WW 57

4. 
   Jfrostjr | Nov 17, 2008 04:35pm | #4

   What are you using for a planer? I have MM FS30 combo machine which has steel feed rollers. I had to adjust mine to avoid marks on some of the softer woods.

   Frosty

   "I sometimes think we consider the good fortune of the early bird and overlook the bad fortune of the early worm." FDR - 1922

1. 
   woodworker57 | Nov 18, 2008 02:58am | #8

   My planer is an 18" Powermatic---BIG Green machine.---WW 57

    

5. 
   hammer1 | Nov 17, 2008 05:26pm | #5

   On many planers, with serrated infeed rollers, marks will be left if you take skim cuts. The rollers crush the wood, which will be removed by the knives, unless you are making the last pass at 1/32" or less. Skim cuts aren't good for your knives and they don't produce a better surface. You improve the chances that a board will remain stable after planing if you remove equal amounts from both faces. 1/16" at a pass works quite well for most stock prep. It helps to have your indicator scale correctly adjusted so you can dial in your final cut. Doesn't hurt to run a test piece to confirm the finished thickness.

   There will still be knife marks on your planed lumber. Getting the knives set evenly will help keep them to a minimum. Reducing the feed speed also helps, if you can. You shouldn't see any roller marks. The knife marks can be removed with a little hand sanding if you are set up correctly.

   Beat it to fit / Paint it to match

1. 
   woodworker57 | Nov 18, 2008 03:00am | #9

   I usuall do take a last cut of 1/32 or so to produce a better cut, or so I thought.  I do flip my wood over each pass to try to maintain stability.=---WW 57

6. 
   BruceS | Nov 18, 2008 03:17am | #10

   How good is your dust/chip collection ?  The outfeed roller may be pushing chips into the stock.  That is if the marks are pretty random.

   Work Safe,  Count to 10 when your done for the day !!

   Bruce S. 

    

1. 
   woodworker57 | Nov 19, 2008 05:36am | #11

   Only as good as my broom and dustpan====WW 57

1. 
   oldusty | Nov 19, 2008 07:16am | #12

       Hey WW57 ,

              I think Bruce has hit it on the head ,

         Without  dc / chip collection the planer will leave the marks you speak of .

             Try hooking up a dc or vacuum , see the difference .

                         dusty

1. 
   dgreen | Nov 19, 2008 02:38pm | #13

   Gonna need a helluva vacuum for an 18" Powermatic! 

    

   ................................................

   Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot

1. 
   oldusty | Nov 19, 2008 05:26pm | #14

      Hey D ,

                 I missed the 18" PM , youre right a dc will be best .

                             d

             Hows things your way ?

2. 
   dgreen | Nov 19, 2008 05:33pm | #15

   Spurt of business keeping me busy but it's just a spurt. Shops are folding left and right up here and the survivors have laid off 50% of their work force. It's going to be interesting for a while!

   Hows things in your neck of the woods? 

    

   ................................................

   Men will never be free until the last king is strangled with the entrails of the last priest.~ Denis Diderot

3. 
   oldusty | Nov 19, 2008 06:05pm | #16

     D , I have been busy for about the last 7 months with no down time , am just finishing off a decent Cherry kitchen with little to back it up .

   Many shops here are dead in the water and business in general less then soft.

        The local Masterbrand cabinet factory has had a major layoff , being the largest employer in town that hurts as well , the health care industry and professional folks are my client base , they don't take pay cuts or have much down time due to lack of work .

                       d

2. 
   woodworker57 | Nov 20, 2008 06:27am | #17

   Thanks for the tip, a dust collection system is on my wish list.  Just waiting for my ship to come in, but I think it has been pirated by the Somalis( not sure I spelled that correctly)----WW  57