Oh, I've done some interesting things with just a hand drill. I've had to make missing and unavailable mountain bike hub parts. Thankfully some of the dimensions are such that you can start with a taken apart cartridge bearing or two, then do a bit of creative welding and grinding.
My neighbor has a lathe, though I think it was meant mostly for wood. I've used it to turn larger items like oddball bottom bracket axles that you can't get, or eBay seller thinks it's made out of platinum. It's a hundred years old, so it won't me machining new pistons or anything, but it's adequate for bicycle parts and can chuck up larger pieces, probably a 2" chuck at least (I never measured it).
