Today I went to the local steel dealer and bought some metal to play with:
Mostly brass rods and some square aluminum rods (I already had the piece of round aluminum rod from an earlier project).
So what to do with a bunch of metal, a brand new lathe and practically no experience?
To my own surprise, only 3 hours and a broken M3 tap bit later, I held the finished pulley in my oily hands:
I’m still not sure why the tap bit broke. Probably I advanced the pulley too far in one step. Oddly enough, the tap bit broke after I finished, when I decided to let the pulley revolve twice without advancing it any further.
Anyway, it was really fun and I’m still amazed how easy it was.