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.

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.

Learn how to polish rocks at home with a rock tumbler ... choosing the best rocks to tumble, and step-by-step instructions for the tumbling process. By the end of this guide, you'll be well ...