I had ordered from Supergrits for some time but the last few times had a few annoying things, like belts that were not the right size (6"x 50"?), and discs that would not adhere. They told me to stick them in a microwave, but I'd rather just buy some that work as intended. So, where do you guys get 9" and 12" discs (around 100 grit). Oh, and what's the best way to get the residue off the disc when you change them? I think I also need a few more belts in 6x48, but since I rarely deal with metal, except for thin spacers, most good quality ones work for me there.