Propeller adapter

A nice thing about having a 3D printer is quick fixes to small things. The 8x4 propeller that came with my Bixler 3 was loose on the motor shaft, so I 3D printed an adapter:

It took 5 minutes to print and three tries to get the tolerances right, but the propeller is now a good fit, much quieter, and seems more powerful. Yay!