Originally Posted by LateBraking
You can always use a rotor hone. The bit attaches to any cordless hand drill and you just use it on your rotor. Some motorcycle guys I talked to just used a scotch-brite pad and some alcohol, or something.
I believe that is called burnishing, where a softer metal is used to clean a harder metal (steel rotors in this case). I have that exact tool, purchased from McMaster-Carr it works great at removing pad deposits (often thought to be warped rotors).