Foredom hammer beltsander

[Ron Torrella]

Having started to develop a nasty case of tendonitis, I'm teaching myself
how to use this Foredom hammer beltsander.  The only real problem I've
encountered is adjusting it so that the belt doesn't travel out- or
inward, thereby fraying either or both edges and shortening the life of
the little bugger.  I've been very careful to not bend the arbor (?) and
have tried adjusting the tension in the belt -- to no avail.

Any hints toward solving this problem?

Thanks a million!

Ron Torrella
Assistant Piano Technician
University of Michigan
Ann Arbor, Michigan