That loud screeching noise you just heard was my soapbox being dragged out from under the bed where it's been gathering dust.
I disagree. The parts may be cheap, true, but the truly hard work of creating the prop - gathering materials, casting the latex bits, building the foundational elements - is already done. When I first bought my 3d printer, I thought I'd gotten a great product. In the three years since, I've upgraded the motor drivers, the main board, and the heating components, and now I have a truly great machine with twice the print volume and half the price of a comparable, new machine. Point is: the foundation was there.
That's why I asked what replacement parts are needed. I can print a serviceable gear in under an hour. Give me a couple more hours, I can mold and cast a dozen of those gears in solid resin.
I love the idea that this forum could be used for things like this: "Hey, I need a thing!" with a reply, "Hey, I have (or can get, or make) that thing."
soapbox screeches back under the bed