I've got an old Craftsman 1/4 inch electric die grinder, and I loan it to people I don't like. The thing spins at like 20,000 rpms and I must have bent something at one time because it vibrates like mad. It has caught and jumped out of my hand many times but the thing does remove some metal. As mentioned, a speed control would be great........mine only has two speeds.....off and OH S*** !!! I only use it as a last resort.


Don