I finally bit the bullet and bought a used Hobart Slicer here in town that was for sale. It's a 1712 model that is dusty but seems to be in pretty good shape and I got it for $200. One thing I noticed was that it was missing the meat gripper that goes on the tray.
Looking online it looks like those parts are about $150. Does anyone know if I have to have this part in order to slice? Can it be used without that part?