I am taking apart an old tablesaw to clean it up. I have spent a lot of time with a dental pick removing caked in sawdust and oil from allen head screws before trying to remove them. I find if I do not do this thougrhly I risk rounding of fthe socket and having to dril lout the screw. For painting I covered the holes with little round magnets so the sockets stay clean.
After I was done I realized I can leave them in place and next time there will not be much to clean out. Obvioulsy only usable on slow speed stuff not on motor driven pulleys.
Bil lD.
PS: I like Al foil for preventing overspray on weird shaped bits.