I use a Flexstone file from PBR for the low voltage small contacts and a metal ignition file for the high current large contacts. After I either wipe down with alcohol and a cotton swab or if it is a tight clearance between contacts blowout with compressed air (can or compressor). For Steppers I use the green Scotchbrite pad, mean green (if super dirty) and alcohol and wipe with a paper towel. I don't do a lot of restorations or repairs like being on the clock, but if I did repairs for others then I would consider a Dremel in the arsenal as it is just another tool to help get a job done. 
(Topic ID: 209975)
