by Dirkels, published
This design has been moved to YouMagine: https://www.youmagine.com/designs/digger-earrings
1 Print 2 in any color you like, if you want wheels in different color (like black).
2 Glue Wheels in holes, big wheels at the back ;-)
When I printed at the local fablab the holes for wheels were a bit to small so I enlarged them a bit. Once I get my own printer up and running I will experiment to come up with the ideal sizes.