Keyring for Challenge/AA/Lucky Coin

Keyring to hold a Challenge Coin, AA Coin or a lucky coin. Current designed for a 35mm (diameter) x 3.5mm (thick) coin but configurable in the OpenSCAD file.

Modify as you need or send me a request for improvement.

Removing supports from between the two keyring loops or the coin groove of the main ring can be difficult. I got away with no supports but your kilometre-age may vary.