Replies

1. 
   mudman | Jun 12, 2004 08:41pm | #1

   are you refering to the grind on the knife?

   Mike

   please excuse my spelling.
1. 
   hartproject | Jun 13, 2004 02:20am | #2

   Yes, the grind angle.

2. 
   mike4244 | Jun 13, 2004 03:04am | #3

   After reading your post I checked new knives. They are ground at 40 degrees, both planer and jointer knives. This does not mean this is optimum, I do not know if there is a best grind angle. I suppose it could vary by material planed, machine etc.

   mike

1. 
   hartproject | Jun 14, 2004 01:35am | #6

   I've been sharpening mine at 37 to 43 plus or minus degrees with different levels of success, so 40 sounds about right. And to Uncle Dunc, what you say is exacly the reason or result for the different levels of success, so I agree.

3. 
   UncleDunc | Jun 13, 2004 06:00am | #4

   If I'm not mistaken, the cutting angle is fixed by the design of the cutter head, and the chips come off the flat side of the blades. The beveled side of the blades is just for clearance, and the exact angle is probably a compromise between strength and drag.

1. 
   mudman | Jun 14, 2004 12:40am | #5

   I'd agree with that one. I've never heard of getting a different angle, they don't even mention it.

   Mikeplease excuse my spelling.

4. 
   JohnWW | Jun 14, 2004 03:21pm | #7

   Dude,

   36 to 40 degrees is the usual range, Delta jointers have used 38 degrees since the 1940's.

   John W.  

5. 
   AlanTurner | Jun 14, 2004 05:37pm | #8

   I have mine done at 35 deg., with a 5 deg. micro back bevel.

   Alan

   Alan

   http://www.alanturnerfurnituremaker.com

1. 
   hartproject | Jun 15, 2004 12:25am | #9

   Cool, thank you everybody!