"Wally" wrote in message
In a few places the surface of the wood has some small ripples. I
tried changing the speed at which I feed the stock and I don't seem to
see any difference. The funny part is this rippling isn't all over the
board but just in a few places. It happens with both the jointer and
the planer. I can get rid of them by sanding though.

Anybody can explain me why I get this results.

By ripples, do you mean about 1/32" wide and high? Runs the length of the
board? Sounds like it is time to replace the blades as they are nicked. In
the case of the planer, they can be reversed. If both sides are reasonably
sharp but just has a nick, reverse only one of them and much of the ripple
will go away.
Ed

http://pages.cthome.net/edhome
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