Here's Part 2, which shows making the screw holder, prop holders, and the tension spring. Update: After some more flying sessions, I am now using .011" music wire, 4 1/2 turns, for the spring, the .012" wire shown in the video still gave too strong a spring.
For the stuff mentioned in this video:
www.cstsales.com - Rohacell 71 IG foam and unidirectional carbon fiber, 1.5 oz per sq. yd.
www.microfasteners.com/ - 00-90 nylon screws, 00-90 plug tap