first of all dont use a dremel it could get out of control then you would be f@#k take it from me dremel take a lot of quick
the question i should ask you is how much time do you want to spend on it
and have you shave your head yet
because i polish my head right before i go on trip because the carbon builds up now shaving will give you a higher compression the go making it a little bit fast and the polish surface make for a nice tight seal