Hi Jerry,
I attended your intermediate class last May so I have seen your class room and it is setup great for both efficient workflow and dust collection.
I am trying to setup a grinder for sanding with a pnuematic sanding drum. I purchased an arbor adaptor that changed the thread from 11 to 20 so that I could screw a 1/2 inch chuck on the arbor. I thought that I was going to be able to chuck a sanding drum and sand away.
You probably already know what I got was mass vibration. I the shortened the 1/2 inch arbor and the adater so that the drum would be closer to motor.
That worked better but still to much vibration.
The motor is turning at 3500 rpm and I am thinking about putting a rheostat so that I can make it variable speed, but before I reinvent the wheel, do you think that it will ever work with the chuck attached to the end of the shaft.
I know that Judy has that nice big drum that she uses for her rough sanding. Is that an expensive sanding unit that mounts on.
I guess instead of writing a book I could just ask how you sanding stations are set up. Could you please help?
I have been using my pnuematic sanding drums in my drill press and it works pretty well but because it is vertical I have to blind sand more than I would like.

in advance for your help,
Tim