Using the advanced tumbler setup from Jar Doctor, watch the incredible before-and-after transformation of these historic treasures. Perfect for collectors and restoration enthusiasts! Pro-Russian ...

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.