Wish I had time to draw this up...
My neighbor does a lot of painting in his large garage (4 car) and he wanted a paint booth/clean room. He made 8' wide wall sections (12' high) with light gauge square steel tubing, and faced with 1/2" MDO. hinged it at the top, mounted to the ceiling, and hinged again about 3' from the floor with HD piano hinges. On each section, he folds up the 3' lower assembly, then can lock the whole thing up against the ceiling, away from the clean room (because he needs a lot of light fixtures in that area.) The real slick part is that he made removable legs for the lower section, and can fold them up 90 degrees to make a very long work surface for staining trim, planing, etc. It's not super sturdy, but at least as good a quality card table, which is fine for the lighter weight stuff he uses it for. He found some really slick latches that hold the panels in the stowed position until he gets up there with a ladder to lock them with a bar that won't let them fall by accident. Very slick setup, and he did a quality job...the edges seal up with an extended jam on every other panel, and he seals up the bottom edge with the same handles that he uses to push the panels up to the latch, and those handles slide into a very strategically placed sawcut in the slab.
