Subject: Jointing prob. /User error or Alignment?

From: damian drewek <[email-masked]>
Date: Wed, 12 Feb 1997 10:55:01 -0600

I have a PM #54 6" jointer.  I seem to be getting concave joints from
it.  Both on edge jointing and surface.

I placed a 4' straight across the tables and placing a flashlight behind
it I see very minimal light and at no point can I pass a sheet of
notebook paper under the straight edge.  I think this tells me my tables
are not sagging.  I suspect my technique for feeding the wood through is
not correct.  

My latest was trying to get the rear fence for my Tablesaw Crosscut crib
to be flat.  I had a 1x4 to surface joint.  FRom what I recall, I fed
the piece in with my hands supporting it to the rear and as it crossed
the knives I moved one hand to the other side.  I don't recall
supporting over the knives, but I might have.  

Can someone review proper technique for me and any pointers, Jointing
always seems to give me troubles....Thanks in advance

Damian

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From: [email-masked] (Threewhlrd)
Date: 12 Feb 1997 18:12:54 GMT

If you are getting a cup in the middle, then your tables are not adjusted
correct.  Now that you have get it close with your straight edge (may not
be straight!), run some test pieces and adjust the table until there is no
cup.  You'll have to play with it until it's right.  Once adjusted you
should not have a problem.