Rep one Urwerk and the watch blogs will sing your praises. Rep one million Submariners, on the other hand...
I've been following this guy's progress on another forum, and even now I can scarcely believe what he was able to achieve. Heck, I even wondered if it was a hoax during the early stages! But have a read and marvel at where laser-like focus, patience, and 3D printers can get you:
http://www.ablogtowatch.com/one-guy-made-shockingly-good-urwerk-ur-202-watch-homage/