Raychaser's Quadrotor H-Frame

We needed a robust, cheap, strong quadrotor/multicopter frame for a project but were unhappy with the options on websites like Hobbyking. Also I'm new to all this and when you crash a lot it's nice to be able to print out parts cheaply.

This is the every-evolving frame we designed with printable pieces and wooden (or aluminum... or anything really) 1/2" 40cm arms.

Designed in sketchup. Printed on a Makerbot Replicator 2.

See it in action here:
http://youtu.be/0ZLPQNrojcU

This proje