If any of you ever need something else mechanical to occupy your time, I highly recommend one of these. It cost me less than $300 and mostly worked when I got it. I've put many hours and a couple hundred more in it since then. It has everything a hobbyist tinkerer could want: heavy, complicated, dirty inside, has potential to make apartment neighbors into enemies, and capable of delivering a fatal electric shock from multiple places. In short, it's the coolest thing I own besides my dog.