Don't know of any. I just picked up some bone and started shaping it. What have I learned? Well...
You can cut it like really hard wood, with a fine toothed saw. Hacksaw blades seem to work.
It's easy to file into shape, but fine files clog easily.
Wear a dust mask.
If you're drilling, go slow and clear the chips/dust frequently, to keep cracks from forming.
Glue. I suppose you won't use epoxy because of pc considerations. It does work, though. Hide glue, perhaps?
As I said, all I've done is experiment. Get thee hence and do likewise. The material's cheap enough.
Reminds me. I promised the missus a bone needle for sewing knitware.
I believe I'll go rob the dog's stash of polished cowbones.
Moose