[mosesbotbol]

The case has to fit the watch movement for one. I have seen a few done in hardwood. Your best effort would be to copy a case and then swap the movement over. Holding the case in place is the most difficult, so perhaps doing that in a big blank and then cutting it down the right size after would be the method.

We make the tooling to hold the watches cases for many big brands in Switzerland. Each unique piece on a watch has its own tooling.