But even still, this largely 3D printed rock tumbler from [Fraens] is unique enough to stand out. To make a basic rock tumbler, all you really need to do is rotate a cylindrical chamber and let ...

But even still, this largely 3D printed rock tumbler from [Fraens] is unique enough to stand out. To make a basic rock tumbler, all you really need to do is rotate a cylindrical chamber and let ...

Q: What about the hobby kept your interest in rock tumbling alive and what was it like first learning the basics of how to do rock tumbling? ABRAM: When my son was younger, we just got a two ...