A coin design with a labyrinth on one side and a code on the other. Just an early attempt at a maker coin. The labyrinth design came from Google images with unknown origin. Any similar design can be re-created. The scad code has a table of arcs and a table of spokes. The arcs are all constant radius from center and the spokes are parts of a line through the center.

Starting with the picture, number the rings from the center, and determine a constant spaced sequence of angles (clockwise) that the spokes fall on. Arcs are defined by ring number and start and stop angle number. Spokes are defined by angle number and inner and outer ring number.

The overall sizes are controlled by a few constants.

I will leave the coding on the back to your imagination. There is a program that will compute the correct positions for the marks. This is then inserted into the scad program. The actual coding is left to the user.