The next steps involve more testing, more building and probably a lot of equations. What I want to know is how much force will be exerted on the weakest points of any potential design, and what I can do to minimize them. Torsion is a big problem, as is basic pressure on joints and hinges. I'll be trying to do as much as possible on paper so that I can be focused and efficient with my prototyping.
Over the coming weeks, I'll be sketching, calculating, building and testing. Stay tuned!