Wide bards and Timer Warping
Also consider that your jointer is never at a perfect 90 degrees. The
way to correct for this is to alternate the cuts. Rather than edge join
all of the boards with the down side against the fence, alternate; down
side against, down side away. Also if you use a lot of pressure on your
clamps, they will bow a bit. This is why you alternate clamps, one up,
one down.
robo hippy
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