I have the tiny Delta planer; I thing it is like 30".
On little stuff it is fine, but today I did two 54" glue ups of three
pieces each. Most of the edges were bowed. When I set 2 together there is
a 1/16" gap on half the joints no matter how I mixed and matched. I jointed
the first and last 10" and then the whole piece again, and it came out good
enough to run with, but it sure isn't right.
I would have expected the short bed to bow out if anything, so I am surprise
they bow in.
Is there anything I can do to avoid this in the future. (Yeh, I thought of
getting a longer jointer, but I really don't have any room for it.)
How much pressure are you applying while you joint? Too much pressure can
do lots of weird things. Also, are you being careful to joint with the
bowing "up" in the middle so to speak? (Sounds like that could be
responsible possibly). Otherwise I'm at a loss unless its just due to small
On 2/25/04 11:26 PM, in article Prf%b.417$ email@example.com, "Toller"
Sounds like you are aware of the techniques involved in removing high spots.
Pay attention to the final pass, and keep your downward pressure just
forward of the knives to minimize problems of table droop.
The run the adjustment routine.
I used to make 6' and the occasional larger board with Rocky, my little 4"
with the 28" tables. Taught me a lot about leverage.
It sounds like the blades are not set at the proper height.
I have a small 4" Magna (now known as Shopsmith). I would never join a 54"
long board on it.
I would think you could straighten the cup by ripping both sides (1/16" both
sides), starting with the cupped side against the rip fence.
I use a #7 plane to straighten long boards and then rip them. The #7 plane
doesn't take up much room in the shop.
I yearn for one of the 8" Grizzly jointers, but like you, no shop space.
Try this, start feeding the piece into the cutter with no pressure on the
outfeed table at all . When enough of the piece is on the outfeed table to
allow you to apply pressure there transfer the pressure so all the downward
pressure is on the out feed table and continue to apply enough horizontal
pressure to propel the piece through the cutterhead only.
If the problem persists then most likely the the knives need readjusting
well it sounds you may need to do some worth with a hand plane a jointer plane.
you can do boards as long as you want.
you can plane the two boards to get glued up at once and with a little practice
get a perfect joint.
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I don't mean to distress you further, but I had exactly the same problem
with that jointer and the only solution I could find was to Get A Better
Jointer. I could never get the infeed and outfeed tables to parallel, and
even when I thought it was close enough, my work was bowed, with much
shorter stock than you're using. Hate to say it, but my best advice is to
find more room, return that jointer (if you can - I lost $50 when I
returned it to amazon cause I told them it was inadequate, not that it was
defective), and buy a better jointer.
Then, if you're like me, the jointer will be the least of your worries.
You can then agonize over your inadequate TS fence, the crappy collet in
your router, the wandering arm of your RAS, etc, etc.
OK. I did try something suggested by the Delta folks (swapping the infeed
and outfeed tables) and that made it appear that my tables were parallel,
but my output was still bowed. That's when I pulled the plug on it (pun
Rule of thumb for the length of stock a jointer will do easily is 1 1/2
times the length of the jointer's bed. You shouldn't have had problems with
a 54" piece of stock on a 30" jointer. I'd check your jointers set up.
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