Discover two creative ways to make your own fidget spinners using bicycle chains, ball bearings, and simple tools! This tutorial covers both a four-arm design and a multi-lobed ring spinner. Follow ...

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 ...

Especially if you are like me and are on re-watch 20 of “Big Bang Theory” — it might be time for a hobby.