Just in case anyone was wondering whether building a fixture to mount a 1/4 sheet sander at a right angle to a table to sand edges and small parts was a good idea, it is not. Clamped down good and solid to my bench, which is not exactly light, it does a particularly effective job of vibrating absolutely everything right off the bench. Chisels are no problem at all, and it was working real hard on the #5-1/2 plane and would have succeeded if I'd given it another minute or two. So at least as a bench cleaning device it comes highly recommended. Wear hearing protection.
I actually did that quite some time ago, but I bring it up now to remind myself as I consider another contraption (a large diameter spindle sander).