Bossdog-Check our Alec Steele on YouTube. He put together a bunch of stuff on gold inlays and engraving. Right up your alley.
I went and had a look at what he did. Basically we are doing the same thing, the tools are a bit different but the process is essentially the same. He started out with hammer and graver and then switched to pneumatic. I am using pneumatic for all of it.