Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4240798.

No glue, no sandpaper required.

Things that you need:

1. Steel Balls 6-9mm
2. Motor with Gearwheel 15rpm DC 3-5V
3. 2 Pin ON-OFF Switch
4. USB charger
5. BL-5B Battery
6. TP4056 5V / 1A Lipo Battery Charging Board
7. Some wires

Link to Verison without Battery

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