I used a belt sander to smooth the edges. I wasn't terribly concerned about making them super nice, just wanted to take off any sharp bits.

The only things I bought were the supplies to make them, and the foam mat I used to build the press, using some scrap plywood I had laying around. The only other tools used were a cordless drill, belt sander, a couple of quick-adjust clamps, a hammer, the oven, and my fiance's hair dryer. And I used my table saw to cut the kydex, but mostly because it was already set up from when I was building the press.