The badge is designed designed for maximum success for beginners learning plastic resin casting. Designed for a one part mold, the included 5 degree draft angle on the surfaces insures that the part can be removed easily from the mold.
A pin back can be glued to the back so it can be worn to your local Maker Faire.
Designs and a positive master can be provided for other Make:City Groups looking at running a casting lab.
The STL file is downloadable here and previous things can be found here.
Here are some of the test parts for tonight's lab.