Scalloping with planer

bdorf · Post by **bdorf** » Mon Jan 25, 2010 4:20 pm

Howdy All,
When planing I get light scalloping. What can I do to eliminate this? Thanks!

SDSSmith · Post by **SDSSmith** » Mon Jan 25, 2010 5:27 pm

bdorf wrote:Howdy All,
When planing I get light scalloping. What can I do to eliminate this? Thanks!

Here is a link to the thickness planing section of PTWFE:
http://www.shopsmith.com/academy/planing/index.htm

If the scalloping is at the ends of the board, you might look in the reference for snipe or sniping.

pennview · Post by **pennview** » Mon Jan 25, 2010 5:38 pm

You might want to check that all of the knives are set to the same depth.

Art

8iowa · Post by **8iowa** » Mon Jan 25, 2010 5:42 pm

Art is correct. a series of mill marks/scallops is an indication that the knives are not set to the same level. This also leads to increased vibration.

This may be an opportunity to sharpen them as well. Do you have the conical disk and sharpening jig?

shipwright · Post by **shipwright** » Mon Jan 25, 2010 6:19 pm

You will get more planer marks at too slow a cutterhead speed or too fast a feed speed. Cuttermarks are a result of the head speed / feed speed combination. Sniping at the ends is a function of table roller heights. What speeds you use and what roller heights you use are related to what sort of job you are doing. ie: speed vs. quality etc.

Paul M