30mm E3D Bigbox Calibration Cube

Here is my submission for the E3D BIGBOX APRIL DESIGN CONTEST - WIN A BIGBOX 3D PRINTER!

I have thought of things which would be good to test such as fitment of items which need a tight fit like assemblies or magnets. So I thought about using a 10p coin as everyone (in the uk) would have a 10p spare for this test and is a set size.

IT ALSO DOUBLES AS A KEYRING!!

There is also features like large and small islands and also small over hangs which make up the BigBox Logo and the e3d logo. If you print it with a small nozzle you will see all the gears and the gap between them.