Chaotic Pendulum

thingiverse

This thing was designed using Tinkercad, and users can edit it online at https://www.tinkercad.com/things/bozH72ykOth. A video demonstrating the operation of this design is available on YouTube: https://youtu.be/vzOQCr7_uFk. To improve performance, I've redesigned this fidget spinner to use a 608 ball bearing. When searching for a suitable center bearing, focus on finding one that's well-suited for this application. These bearings tend to be unshielded and un-lubricated. In contrast, the four colored bearings shown in the photo are shielded bearings. They're used only as weights, and are often less expensive than their unshielded counterparts. The individual components of this design fit together through friction. To ensure a secure connection, I recommend using a bench vice to press them together firmly.