jointer questions??

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Forum topic by jdejong posted 03-14-2013 06:45 PM 681 views 0 times favorited 3 replies Add to Favorites Watch
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5 posts in 2172 days

03-14-2013 06:45 PM

Hey fellas I’m new here and I’ve got a Jointer question…...I recently purchased a used 6”powermatic jointer and it seems to leave a slight belly in my cuts somewhere between a 32nd and a 64th…justwondering what is causing this …knives not adjusted correctly or table not co-plainer….thanks a bunch

3 replies so far

View RockyTopScott's profile


1186 posts in 3749 days

#1 posted 03-14-2013 06:59 PM

sounds like a chip in your knives or they are not set up correctly.

I would take them out and then tune up your jointer

-- “When you want to help people, you tell them the truth. When you want to help yourself, you tell them what they want to hear.” ― Thomas Sowell

View jdejong's profile


5 posts in 2172 days

#2 posted 03-14-2013 07:47 PM

Im fairly certain the knives are correctly set the cut is smooth and square to the face of the boards…The problem occurs in the cemter of the jointed surface…its more like the ends get tappered in…I never checked the tables for co-plainer…I’ve also never shimmed a jointer before. A tune up couldn’t hurt ..I’ll post a picture layer on….thank you for the input!

View runswithscissors's profile


2965 posts in 2295 days

#3 posted 03-14-2013 07:52 PM

In tuning your jointer for coplanarity, try adjusting the gib screws on the dovetailed ways first. You may not need to shim.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

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