Ah, I dig. Yeah, there are books that teach the fundamentals and inner workings of machines, rotary parts, and the like. Probably the best place to look is in the engineering section of a college bookstore. They won't be aimed at artists, but there should be enough diagrams and illustrations to get some use out of them. Seems like they'd be pretty expensive though. There's always used bookstores, I've found tons of valuable reference material sifting through bargain bins.