Custom bayonet hard case for Canon 50mm f1.8 EF lens.

Customized version of http://www.thingiverse.com/thing:56910
Custom bayonet hard case for Canon 50mm f1.8 EF lens. Labeled or unlabelled top. Line with craft foam for full protection of lens. If using labeled top, print text side up and trust bridging if your printer does bridging well, otherwise use support.