I have to admit that the movements are a mystery to me, I leave that to a mate who is a former Omega employee.
Cases are a straight forward lathe and mill engineering project, no real skill needed to achieve acceptable results, unlike all those teeny weeny little bits in a watch that you need a microscope to see. Even watch faces are a simple 'puter and printer job.
On further thought, I do prefer a sweep second hand, so maybe the Timex might not be the best choice. As I said this project is nowhere near the top of the tuit list, in fact it is just about at the bottom, although with the warm weather the list is getting some attention.