Separating brass

[Linko]

Acetone or MEK will take it off with a single wipe of a rag. As I recall, high concentration IPA works well too.

Odd aside: If you ever accidentally write on a whiteboard with a Sharpie and end up with non-erasable markings, simply go over the Sharpie marks with a Dry Erase pen, then wipe as normal. Removes about 95% of the Sharpie marks.

Oh Boy that reminds me of when I worked for a large corporation and the lady I worked for was in the habit of partaking at work!
One day in front of a large audience when she was presenting a slide show she wrote on the slide screen!