Watchmaking is quite the skill. I have a book “Modern Watch and Clock Repair” from 1940 (although it’s the umpteenth reprint) that describes it in gory detail. The book even discusses how to repair a watch that was worked on by a hack repairman.
Favorite concept: If you find that things just aren’t going together the way they ought to be going, cover your workbench, go outside, smoke a cigarette, come in and try again. It will work much better.
I manufacture huge watches with hardly any moving parts.
