Fidget Hand Spinner

thingiverse

I used the diameter of a standard 608 skateboard bearing to determine the dimensions of the inner circle. This ensures that a 608 bearing will fit perfectly inside the inner circle, allowing the spinner to function smoothly. To enhance stability, I added three additional circles on the outer edge of the spinner base. By incorporating objects with equal weight, you can maintain consistent rotation for an extended period. During testing, we achieved a maximum spinning time of 5 minutes and 49 seconds.