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 ...

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 ...

When you polish the rough edges away, you discover a beauty that was always there but was just a little hidden. Using this strategy, a rock tumbler turns ordinary-looking rocks into gems. However, to ...

Rust is the bane of any metal collector, whether they have a bounty of old coins or just an extensive wall of nuts and bolts for future projects. Once something rusts or corrodes, it loses its value ...

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 ...