OK, the sander was up and running today. We blasted 50 doors through in next to no time. Once the various belt samples arrive, I'll nail down my grit sequence and get things calibrated. The platen needs some new graphite due to a few small gouges, but we can work around those spots for now.
The other issue that I need to deal with QUICKLY is a stiff and slick conveyor belt. (There is no visible wear on the conveyor, but the top of the grid seems hardened by oxidation and/or light exposure.) Shorter parts tend to get hung up between the heads as the conveyor travels past below them.
I've heard that you can dress the feed belt using one of the contact drums. Raise the bed as far as possible, then lower the drum onto the belt as it runs.
Is this process more for compensating for wear, or can I get back to a more resilient rubber by removing the top layer?
Alternately, is there any chemical that will soften the rubber without leaving any surface residue?