UPDATE:

• Usable magnets: ∅10x5mm, ∅10x6mm, ∅8x6mm

Video:

Principle/Ideal state of the toy:

For best results, there must be minimal space on one side between magnet and spike.

Assembly:

1. If the pins are too small or large, reprint them with a different size.

Step 1:

Screw in the screw until you see a spike (see detail A).

Step 2:

Assemble it as shown above, but without pins! Then measure dimension between spikes and calibrate them to 50mm with screws (note 1). If you don't have Vernier Calipers, use 
technique „baj voko“ according to picture below:

Step 3:

After calibration insert the pins (2) and assemble it. If the pins are too small or large, reprint them with a different size.

Step 4:

Step 5: Insert the cube and let's spin!

Commercial uses:

If you want permission for commercial use: patreon.com/Kocy