As far as how to process the bones for crafting... here is one easy way if you have a lot of ant mounds. Chain the bone to a heavy brick or cement block. This prevents the bone from being dragged off by a predator. Then stick the bone in the ant mound. Make sure to jam it in as deep as possible. Be careful on this step because it really ticks off the
ants. I said chain the bone to the brick because if you use a rope especially a rope made from natural materials the ants will eat the rope. Use chain and all the ants will strip from the bone is meat and gristle