I know all about using a Dremel, I just have never owned one.

I have used die grinders, all the way up to CNC machining centers.

I just wanted to know which bits worked for you.

I was thinking that an electric tire groover might be the best tool but a Dremel has lots of other uses and I don't groove too many tires.

Arf arf arf... That's my other dog impression.