I'm having a problem with the cutters creating a low spot or dish in the
center of the boards.
I have rechecked the tables to be sure they are flat and level. Recently I
installed new knives,
they didn't help. Any ideas what is causing this?
Thanks in advance for your help,
Are you having this problem with long boards? If you are having this
problem with long boards be sure to support the in feed and out feed ends of
the board. The board will bow if not supported and will bow up in the
middle, bowing up in the middle caused the blades co cut deeper. See where
I am going with this?
The boards have been about 4' long and I was supporting them on the infeed
but maybe not as well on the outfeed. This was 5/4 red oak about 11" wide.
I didn't realize wood this heavy would bow. I'll try this next time.
Did you have this problem when you first bought the planer? If not, you
might want to check and see if some wood debree is causing the blades to
warp when you tighten them down. Might take the clamping plate completely
off and see if there is a burr or anything else preventing the blades from
tightening flat to the cutter head. The blades are so thin, it would take
very little effort/obstruction to make them warp out..
Have you checked the cutting head relative to the table? In other words, are
the knives parallel with respect to the table? Did you tighten the bolts
consistently across the blades? A 1/4" torque wrench should help. The cutter
head maybe bend or the cutter head end bearings maybe out of round.
I am wondering the same thing about the head being bent, as I have used
shorter boards that were flat on
both sides and it still occurred. That is why I tried a longer board after
I had rechecked
the tables and waxed them.
I guess it will take a dial indicator to check the head or would you be able
to see it with a straight edge?
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