608 bearings were cleaned of grease with alcohol and soap water. Ceramic bearings recommended but not strictly required.
Please also note that this part was shared under non-commercial license, please respect the designer. If you want to sell this design, contact me, we can figure something out
Added model for the light spinner without counterweight bearings. Spins slower but still keeps hands busy
NoTriangles version added by Jweaver request
Printed in red ApolloX from FormFutura