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.

Weathering and erosion slowly chisel, polish, and buff Earth's rock into ever evolving works ... they create and reveal marvels of nature from tumbling boulders high in the mountains to sandstone ...

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.