I've often thought about using an electric sander to sand down my hands and feet but I'll just stick to my "sanding stone". Has anybody tried pumice? I'm talking about using it on your hands, feet, knees, and elbows. I use a really solid one that works wonders. Those porous ones that they sell in drug stores trap the rubbed off skin and starts to make the rock smell. My only problem is finding those solid ones, I think I got my last one at a hardware store. Anyone know where to get a good pumice stone.