Ok, here we go. This is my first post on the rec, although I have been lurking for several years now. Usually any question I need answering I can easily find by dags, but this escapes me. I just received a Jet JDS-12B 12" disc sander for my birthday (Yes, I picked it out). UPS brought it today from Amazon, along with some extra discs from Grizzly (Woodstock Int. brand). Well, anyway, I cleaned the oils and cosmoline stuff off of the sander with denatured alcohol, taking extra care to get the disc itself clean. I peel the backing paper off of my first disc, taking care to get it aligned JUST right before I stick it on. (After all, I get only one shot at this, right?) As I press it carefully into place, it starts coming right back off when I release it! Ok, so I figure it's one of two things; either I didn't get the oils off the metal disc, or it's cheap glue from the aisian import sandpaper. So, I break out the laquer thinner and scrub the metal disc again. Well, just maybe I got a little more off, but I'm not really sure. Looks just as bone-dry as before. So, I try the same disc again and it falls right back off when I let go. Ok, so maybe I ruined the disc before, or maybe bad glue, so I try the disc that came with the sander. It's a 60 grit. (What's THAT for, shaping telephone poles?) Well, same results. The discs seem pretty sticky to me, I feel certain if I stuck them to any smooth surface I would have trouble getting them back off in one piece. On closer observation, I see the metal disc has small well-defined grooves in it, sort of like a record album, but coarser. Could this be part of the problem? Should this disc be really smooth? I'm more of a neander woodworker, and this is the first stationary sander I've ever owned, so am I missing something here?
Mark W