Engraving...suppose you had to engrave a corporate logo/name into something like a laptop exterior. ? Answered
It has to be portable and reasonably compact, since clients don't want said items leaving the building. Chemical etches are probably no-go. A cut-out mask and sandblasting works but isn't very portable and you've got the noise of the compressor.
Ideally what I'd like is something sort of like CNC where an image can be loaded, and the machine then takes over the engraving process. Let's say .25 mm deep. I have some thoughts but wanted to put it out into the hive mind. I'm a 'keep it simple' guy, so if there's an easy way to do this, I'd like to hear about it.?