divingin
Gold $$ Contributor
They Last quite well for me when I mark the case head, providing I don't use a solvent-soaked rag on the case head or tumble them.
It's actually a bit of a chore to get it off with a solvent, particularly in the stamping.
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.