I use Klingspor Sterate Aluminum Oxide paper(this is what Ed has)it's available from 60 up to 1500. I order it from Klingspor in 9x11 sheets, cut it up into small pieces. I usually order 400-1500 grit. It's a good quality paper, long lasting, doesn't load up like some papers and doesn't lost it's grit. It's all I ever use other that the occasional MM polishing pads for "plastics" I feel need to be wet sanded. It's reasonably priced at $2.95 for a pack of 5 so my normal order of 6 different grits is usually around 18 bucks and they ship fast. I normally get it in 3-4 days. This usually lasts me the better part of a year.