Are you using stamps, or engravers, or what? How much does it cost to set up to do it yourself. We have to use an engraver at work, and I suck at it freehand. It's just a hardened tip in a dremel sized handle and it vibrates. The speed of the vibration controls the depth of the engraving. That thing is the most useless piece of junk we use. I'd rather leave a knife unmarked than use that!
Zac
Zac