I read that there's aleays "post production" work that needs to be done. I wonder if you were to get one that was broken but had all the pieces, if you could expoxy it together long enough to pull the design off it. If you had to file a little of the epoxy that was rendered off, that's probably possible... It's all theory of course. It wouldn't take long to pay for one of the less expensive machines making those gears if you could get the accuracy.