I have some fixtures I want to mark - like what parts they are for, number them, mark shelf location or whatever, etc.
I know its common to use stamping punches but that doesn't work so well for small parts, or hardened tooling, and you can't change it later. On the other hand if you use a sharpie you are screwed it later on it wears off with the coolant splashing on it and you no longer know how it's supposed to be set up
Anyone found some sort of paint pen that holds up long term to coolant washing over it? Ideally something that could be removed later with acetone or thinner or something in case you remachine the fixture for a new part.