Summary

A newer version is available! SL6 Micro Quadcopter

http://www.thingiverse.com/thing:735405

Enjoy!

Instructions

Best slice settings I found are:
Layer height: .25
Perimeter: 3
Infill: 20%
Solid layers (top and bottom): 3

Best to use M2x14mm socket screws for motor mounts as it "sandwiches" the layers together making for an even stronger frame.

Camera adapter fits a 808 #16 keychain camera (with velcro). Then mount the adapter underneath the frame using 4x 2x8 Self tapping screws - Props aren't visible.

SL5 Micro Quadcopter