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Posted to rec.crafts.woodturning
George
 
Posts: n/a
Default Wobbly Grinding Wheel?


wrote in message
oups.com...
Hi Harry

You, I and a lot of others have, or have had this problem, so much so
that Oneway has made the precision balancing system, I find it rather
expensive, but it does a excellent job.

The problem has arisen because the flanges that hold on the wheels are
now stamped out of a steel plate, rather than machined, as was done
before and still for the higher priced machines.


Anyone can lap a stamped washer if they care to. If the sides of the stone
are not straight, won't do a bit of good. Matter of fact, won't do a bit of
good or harm if the washers are stamped, because the stone doesn't flex, and
the hole is neither small enough nor the washer thick enough to align the
stone. It would also need ground threads like those on your tablesaw arbor,
of course, to be effective. Alignment is the job of the insert - bushing -
which is often made of flexible material like plastic and can deform and
stay that way if bumped.

Matter of fact, though you can spend as much as you want for a "balancing"
system, a bit of sheet lead held firmly by those washers against the
appropriate portion of the wheel does a wonderful job. Put cardboard where
lead's not required but shimming might be if your washers are bored and
lapped so precisely as to require it. Balance is an entirely different
matter from alignment, only being affected if the wheel is severely
off-center.