Rock tumbling is a great hobby for children and adults alike. Opening the tumbler when the cycle is completed is almost like discovering treasure; you don’t know what you’ll get or how colorful the ...

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. They’re ...

In order to turn a rough semiprecious stone into a beautiful piece of art, there are generally two options. You could wait a few hundred or even thousands of years for water and sand to polish the ...

While the words “instant gratification” and “rock tumbling” may not fit in the same sentence, the hobby of rock collecting and polishing is still very satisfying. What begins as raw, unrefined rocks ...