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 ... he used in the vibratory bowl feeder he built last year. Pulsing the electromagnet pulls ...

Load balancing refers to the even distribution of contents in your rock tumbler. This includes rocks, filler material, and ...