: I've found that air powered dye grinders are great for this type of work.
: There are tons of stones, wheels, bits and burrs for these things. The
: 20-25k rpm makes 'em fast and because of the gyroscopic effect, stable and
: easy to control. The Dremel sounds familier. The downside of the dye
: grinder is that it reminds me of the dentist's.

the contour sander is not a rotery tool like a die grinder or the electric dremel. it is a vibrating sander with interchangeable contoured heads. one of the attachments turns it into a detail sander, like some would use in furniture refinishing.
as for the dentist, i have had an ordinary dremel rotary tool for many years. one time when still young and stupid i broke a tooth into a dangerously sharp edge, and with the help of the bathroom mirror and the dremel, i took the edge off myself!
daren.....