Folding Quadcopter

I got the original design from here:
http://multirotorpilotmag.com/fpvquad/

I printed the original design, and I did not like it because it is way too flimsy :)

I heavily modified it for more strength; thicker arms, stronger bottom, and middle plate (because of the walls around it). It houses 2 compartments. The bottom one for the ESCs, and the top compartment for the rest of the electronics, like the flight controller, receiver, etc.
I am using the Naze32 flight controller, Turn