I need to make a collapsable tubing frame for an accessory to my yard robot. It will basically form a box shape. I will make a heavy duty fabric liner which will slide over the top tubes to hold leaves. I want to be able to easily disassemble the box and store it in a small space when I'm done with it. This is the best idea I could think of for a lightweight collapsable box that holds alot of leaves. When it's full, I intend to pick it up off of the robot and dump the leaves into the pile.
My question is this: I've seen those tubing structures that have the corner box fittings with X, Y and Z connections. Does anyone know where I can get these?
Also, I would love to hear other ideas for a lightweight collapsable box.