A Peach Of A Homemade Parts Tumbler. 32 Comments . by: Kristina Panos. September 1, 2014. Title: Copy. Short Link: Copy [Chris] finds the average price of rock tumblers insulting. Almost as ...

If you’re reading Hackaday, there’s a good chance you had a rock tumbler in your younger days. Hell, we’d put odds on a few of you having one rumbling away in the background as you read this.

Ah yes, the ol’ National Geographic-branded rock tumbler. “Polish everyday rocks into dazzling gemstones!” promises the $59 product on Amazon aimed at avid geology enthusiasts.