I recommend getting the bone from someone who owns dogs that chew on them (finding them in their yard) or talking to a local butcher. Personally, I get an infinite bone supply from my neighbor's woods. Her dogs consume an enormous amount of treats, and I find the leftover bones buried amongst the conifer needles.
These little bone carvings make great necklaces, charms, and trinkets. If you tea-dye yours like I did here, they will have an natural aged quality that is irresistible to surfers, beach bums, and tourists :D
I have a blog, here!
Step 1: Cutting Down the Bone
I used a band saw. The blade is 3/8" wide (6 teeth/inch), and I recommend the same for you.
WEAR SAFETY GLASSES!
Step 2: Plan the Design
Step 3: Cut Out the Design
The picture is a bit blurry because my band saw is not on level ground...it rattles :P
Step 4: Sanding
If you plan to do this a lot, you'll need to get a respirator. Bone dust has some serious long term respiratory effects if you are exposed to it a lot.
Step 5: Drilling the Eye
Go slowly and in spurts or you'll overheat.
Step 6: Dyeing
The vinegar dissolves the top layer of calcium and impregnated those cells with tea. After the bones have soaked in the dye, fish them out and GENTLY rinse them. The dye won't be very stable until the bone is completely dry.