They’re relatively simple contraptions, and a common enough DIY project. But even still, this largely 3D printed rock tumbler from [Fraens] is unique enough to stand out. To make a basic rock ...

They’re relatively simple contraptions, and a common enough DIY project. But even still, this largely 3D printed rock tumbler from [Fraens] is unique enough to stand out. To make a basic rock ...

This has been the year of the Stanley cup. It all started in January with the viral pink tumbler ... you can attach unique charms to show off your personality or clip on a DIY lip gloss keychain.