Dremels have caused just as many problems as they have solved. Dremel's are like a gun in a certain respect. Either in the hands of a moron or unsteady hands can end horribly, on the other hand in the hands of a comptent steady handed person it can come out with a wonderful result. I use a dremel on some things, but I never work on anyone else's guns with the dremel if I can help it. regardless of what I'm working on I'm extra careful because I know how easily it is to screw something up. I've never worked on any critical parts with a dremel, that's reserved for hand work because I always want to do it right and not cut corners (metaphorically and litterally).