Ideally that plastic gear would be a standard size and shape that you could find described in a parts list somewhere in the manual. I'd much rather be able to b

Ideally that plastic gear would be a standard size and shape that you could find described in a parts list somewhere in the manual. I'd much rather be able to buy one out of a giant surplus bin somewhere in mainland china than trying to measure it and find/make a bespoke replacement. Replaceable fuses make great failure points for things like motors that can draw silly amounts of current when stalled.