Recently, I recently reset my jointer knives using my brand-spanky new
oneway multi-gague (drive-by neener). As a general rule, should knives be
set _slightly_ above the outfeed table? The ends of the knives are between
1 and 2 thousandths above, the center of the knives are a little lower. Of
course, I can't control that since the leveling screws are under the ends of
Or am I just splitting hairs?
you mean lower than the ends of the knives, or lower than the outfeed table?
If you mean that the centers are a little lower than the table, you have a
problem that needs to be corrected. Lower the outfeed table, or raise the
knives, until the centers of the knives are dead even with the outfeed table.
Then hone the knives until the ends are dead even also. Finally, lower the
outfeed table, or raise the knives, until the knives are 0.001" above the
OTOH, if you mean that the centers are lower than the ends, but still higher
than the outfeed table, and if the ends are only 0.001 to 0.002" above the
table, then I think you shouldn't worry about it -- you can't possibly have a
significant variation in height along the length of the knife.
Of course, if you're still worried about it, you can proceed as above anyway.
Doug Miller (alphageek-at-milmac-dot-com)
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Traditional answer is to have the outfeed table microscopically below versus
tangent to the arc of the knives. Not sure exactly why, though it may have
to do with springback on the wood after impact.
I use the "carry 1/16" method on mine. But the real answer is to set the
table to get the straightest cut!
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