I wore out a dremel about 20 years ago doing a set of air cooled heads. Shortly after that I found a Foredom at a garage sale. The flex shaft, and it doesn't turn as fast as the Dremel, has it's advantages and disadvantages. Foredoms and Dremels do come in handy occasionally. Cleaning up key ways comes to mind.

Larry

I don't own a vehicle that isn't old enough to drink.