I got a rock tumbler. It's been described as "really really loud." Indeed it is. I didn't know, but once you start the process of doing the "work of rounding a rock that would take hundreds of years in nature in a few short days" you can't stop. You have to keep it going "rattle, rattle, rattle, RATTLE, RATTLE, rattling 24/7 for four to five days. Other wise everything is ruined. Just a few more days--then I'll take it away, to live in the country, where it can run free, and it will be happy with out all the evil vibes the neighbors and the room mates hurl toward it. Poor thing.