The best way to remove powdercoat is Bead blasting, but if you dont have access to that, you can use aircraft paint stripper.
Anodizers can use LYE because it works on ano. the chemicals wont touch paint, but eat ano right up.
Using a Dremel will not give you a very uniform polish, the polishing surface is just to small. Check out my little page I did, when stripped and polished my Maverick.