I decided to try my hand at bone carving I got a piece of bone from a pet shop intended as a dog chew and did this . The picture is ink , indian ink but not stable and I am not sure what to do , it washes off but not completely and soak into the bone blurring and discolouring it. At first the bone seemed unworkable and I thought this cant be the way to do it but I find as with all things the more I tried the easier it got and basic tools such as saws, drills  and sanders are all it needs. I haven't had time to do more and the smell of burning anyone who has had a tooth filled will know the smell ) leads to protests from my wife , even though I use the garage , so I have to wait for her to be out.