that's amazing, Leah, that you have spoken to so many people. Are they providing you with useful information? I hope that you are documenting these communications, especially the phone calls or interviews, because there is no automatic record of these as there is with email.
Leah, this is starting to sound like a very plausible and potentially fascinating thesis project. Now that you have explored the business and user sides, I think you may need to get your hands on some of this raw material, and see what its properties are. If you are developing a proposal that focuses on one material, it will be very important to thoroughly understand how machinable it it, how the shape of the bones influences the kinds of designs you can make, etc. steven