A quick release keychain I've designed for my SO. I've resigned it based on NAAD_3D design and build in some feature that makes it easier to FDM 3D print and made the holes in line wit the whole print which hopefully increases their strength. 

Print tips

• The housing is best printed upside down and standing up. 
• The clip has a flat edge along the long side, this is the best place to lay it down on the build plate. 

The mechanism is a bit gritty at the start, but this should fade over time. The clip is not yet thoroughly test, I'm still waiting on the in field test results.