The Sukkah walls are made from 8 panels of thin 4'x8' Luan (a thin plywood with one smooth side). I cut the panels down to 4'x7', and then attached 2"x2" lumber to make a "H" frame for strength. The Sukkah is 6 panels long by 2 panels wide.

To join the wall panels together, I used 5" long bolts, with nuts and washers. Note that it is hard to measure these holes, it is much easier to drill them in pairs. To do this, before I attached the 2"x2" pieces to the Luan, I clamped the tall edges of the "H" together and drilled the holes in pairs.

To keep track of which holes go together, I marked each panel with a letter on each side of the joint. to re-assemble the Sukkah quickly, you just line up A with A, B with B, etc.
The two corners of the Sukkah are made from a pair of these panels, joined with hinges on the inside. I used two hinges per corner, and I added extra pieces of 2"x2" to the "H" frame to provide a strong point for the hinges to screw into. In retrospect, it would have been simpler, and just as strong, to join the corners with bolts, as the wall panels were.
