I have just spent at least an hour and a half in frustration because of a poorly designed tool. The Jet drum sander (10-20) has to be the least user friendly tool I've ever encountered. Changing the paper on a sander should not be an exercise in frustration but at least for me it is. In searching around on the Net for tips on changing the paper I've discovered it isn't just me, but many, many people have the same problem. Some say use a special tool, others say the first thing they did was throw that tool out. Bottom line, in my opinion, is this tool was extremely poorly designed when it comes to changing the paper. Well I got that off my chest but the sandpaper still isn't snug enough to use the tool.