Simple outline prop guards for the Hubsan Q4 micro quadcopter.
I believe this is identical to the Estes Proto X micro quadcopter, but very slightly larger than the Cheerson CX10.
Procedurally generated in OpenSCAD so in theory I could produce versions for other micro-quads if I can get hold of the motor dimensions.
UPDATE June 5, 2015: Added models for Cheerson CX10 as requested
Mine are sliced at 0.2mm layers, 0.48mm width.
Clip to the bottom of your Q4 motors (careful of the wires!) or remove the props and fit them above the frame for a bit more security.