Originally Posted by
Mel Fulks
snip... Many boards straighten
imediately in reaction to removing wood from the convex side...snip
Just a question because I don't know...
The board is convex because there is either pressure on the convex side, or a pull on the concave side. (Or there was excessive blade wander when it was cut, a different issue). This assumes that there is a convex and concave side. I think there is with respect to Mel's comment.
So is it more likely that wood expands rather than contracts? And that the force exerted by expansion is likely greater than the force exerted by contraction? Seems like that would have to be the case if the wood flattened after cutting something off the convex side. Meaning that the force exerted by the wood on the convex side would lessen, and the convex side would push relatively harder and cause the resultant board to flatten.
Otherwise, why would such a thing happen?
Edit: Years ago I bought some oak and cherry from a guy I used to work with, for a great price. It was air dried and I had it kiln dried. When I got it home I passed it through my planer, just a bit, convex side up, before storing it. I guess I may have helped myself by doing this...beginners luck...
Last edited by Bill Space; 03-23-2019 at 9:15 AM.
Reason: change word from convex to concave
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