I have not used the Dremel (yet) but respect those who do. An ignition file, 220 sandpaper or finer, a lot of alcohol - laden paper strips (I like to cut non-coated paper plates into strips) works for me, they all play without issue. I am extremely light-handed when using these, I am more concerned with cleaning then changing contact angles. Would worry about dislodging a soldered contact, even though I keep a bag of new replacements.
I purchased a new Dremel and like many started looking for ways to use it, maybe this is one.