This 3D printed planetary gear fidget spinner is a fascinating mechanical design that seems like it could spin forever. The intricate gear system moves smoothly, creating a satisfying motion that’s ...

In one little corner of YouTube is a small but vibrant community sharing videos about gearboxes of their own design, particularly those with very high ratios or other quirky features. Adherents of the ...

How strong can you make a 3D-printed gearbox. Would you believe strong enough to lift an anvil? [Gear Down For What?] likes testing the limits of 3D printed gearboxes. Honestly, we’re amazed. 3D ...