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 ...

Position the Glass or Tumbler: Adjust the rotary axis to the right position for your glass or tumbler. Insert it into the rotary fixture, ensuring it’s centered and balanced to rotate smoothly. Adjust ...

This lapidary polisher jewelry making tools feature ensures optimal cooling and lubrication during the grinding and gemstone, jewelry, rock polishing process, all while using clean water on your ...

We tested the most popular rotary tools—from Dremel to Ryobi—to find out which models deliver the best power, precision, and ...

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 ...