About this 3D model

Obsoleted See http://www.thingiverse.com/thing:985137 for a better card holder. I really liked Reverbflange's idea for a simple card holder. This remix takes his concept and changes a few things. The arc radius is smaller, about 180mm. The back edge is raised more than the front to ease card insertion. The slot is slightly wider at the top than bottom. Total width is 165mm.