I built mine out of two 1 inch EMT poles and two 3/4 inch EMT poles. They were cut in half and slide into each other. They are held together with a captured pin. I weigh 280 and it supports me very well. The whole thing collapses into a bundle of 4 poles 5 feet long.

Thanks everyone for the inspiration. This works great to throw in the back of my truck for areas without trees.

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