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.

If you've ever seen a rock tumbler in action, it's the same concept, except instead of a shiny rock, you get polished and deburred metals. If you're working with smaller collections of metals ...

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