Rotating Dice

This was totally based on these nice and well machined rotating dice:

https://www.youtube.com/watch?v=r2N7ZlqV9eQ

To make one, you'll need:

- 4 small bearings (3x10x4 mm) like these ones:
https://www.amazon.com/Fishing-Shielded-Miniature-Bearings-VXB/dp/B002BBF59C

- 14 little magnet spheres (3mm):
https://www.magnetstore.co.uk/neodymium-sphere-magnets/3mm-sphere-magnet/

- a 45mm length metal rod, with 3mm in diameter. I used one with 2.7mm from a clothes hanger. By rule, the tighter, the better. I think 2.8mm will work well.

- two 16mm length screws, 3mm diameter (M3).

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- Print the parts with 0.1 or 0.2 layer height. I printed the parts with 20% infill, 3 shells. The dice discs were printed with 50% to give them some weight and moment of inertia.

I've printed the supports with the drawings facing down. Try reducing the perimeters to one in the first layers. I found that the surface comes out m