I used red pine floor truss' and galvanized pipe for sort of an industrial look. I used a large can for a template for the corners. The galvanized pipe was tricky at times, trying to get the connections but once attached, was stable and surprisingly comfortable. I'm making another as well. Cost was a little over $100. The galvanized pipe and connectors patinas in the humidity which gives it interesting color. After the desired color was achieved, I sprayed the pipe with clear lacquer so it wouldn't rub off on clothes.