Curious: What is your best solution for solder mask removal?

[Dr_DX]

I generally use a very fine sand paper (1000+ grit) or emory cloth when I can get to it. If it is hard to reach, then a jeweler's straight slot screw driver with a sharp tip. I haven't found a chemical solution that I would risk using. Looking for a better solution if it exists. Something that could be used in Dremel would be ideal.

I know there are conformal coating removers, but I haven't found them to be very effective against solder masks.

Thanks,
Dr_DX

 

[unit_399]

For small areas, I just scrape it off with an Exacto. For larger areas, I have always used Acetone (finger nail polish remover). I apply it with a Q-Tip, let it sit for a bit and blot it off. Sometimes takes a couple of applications.
Usually the treated area bubbles up, and an be removed with a razor knife or such.

- 399

 

[LeapFrog]

I've picked up a few adjustable fibergass tipped "pens", a few twists exposes fresh fibers after they've worn down.