Reply by Sarit

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Posted on Saw stop issue with material drift

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550 posts in 3254 days

#1 posted 04-04-2012 09:40 PM

You have to approach this systematically. Test each theory until you find the culprit.

First raise your blade and move your fence to it so its just a paper’s thickness away from the sides of the teeth and lock down the fence. Is the gap the same all around? Is the riving knife touching the fence (it shouldn’t be). Repeat this on the other side of the blade.

If that’s not an issue, put a straight edge against the fence and look for gaps. If you see gaps, slide the straight edge back and forth and see if the gap moves w/ the straight edge (ie curved straight edge) or with the fence (ie curved fence).

Still not it? Then take a wide board (make sure its straight by sliding it against the fence as in the prev step) and without the riving knife, without the featherboard, try nibbling off one edge with a push block like this:
I try to position my push block closer to the blade than to the fence. That helps to counteract the resistance that the blade makes which will try to make the workpiece drift away from the fence.

Is it curved? If not, then try adding in the riving knife and repeat the last step.

Still not curved, try adding the featherboard.

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