The Dremel gets a bad rap and rightly so! (Thanks Perfessor!! ) Most folks attempt to hold the motor while trying to do "precision" maneuvers, at a constant speed - recipe for . . . well, screwed up parts! The setup needed if you're going to go that route includes a flexible shaft with a much more manageable hand piece AND, AND, I SAID A-N-D a variable speed control (mine is foot operated) !!!! So, you'll need more than just a dremel motor and a set of bits/sanding drums!! The MAIN ingredient is CONTROL!! OH . . . wear eye protection . . . or the Eye Doc will use a mini "dremel" to dig metal (and the rust bloom) out !!! Not good!! Personally, (since then!) I look through a large, adjustable, mounted/lighted mag lens - works great!!!
Mike