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Reply by HokieKen

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Posted on Jointer problems

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HokieKen

7087 posts in 1339 days


#1 posted 09-27-2016 12:46 PM

It sounds like the blades aren’t set properly (higher on one side than the other). You’ve already checked that, so if your confident that’s not the issue, are the tables both flat and coplanar? If yes then it’s likely an issue of technique.

When I have cupped or twisted boards, I have to be methodical in which side I joint first and where I concentrate the pressure. I personally find it helpful to hit the high edges of the concave face with a hand plane just enough to minimize wobble. Then I joint that side first and apply pressure on the outfeed side at the center of the board taking light passes until I get flats cleaned up on both edges.

The fact that spinning the board helps the issue leads me to believe that you’re concentrating your pressure on one side consistently. Spinning the board also means that your cutting against the grain half of the time. I’d recommend taking a board that’s already S2S and make a few passes over the jointer with it and see what your results are. It may reveal that you need to adjust where you apply pressure on the outfeed side.

-- Kenny, SW VA, Go Hokies!!!


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