I built a few of them with different materials. Just recently I made one out of sheet metal. It works like a damn. I'm hanging 12 pounds right now with no probs. No pain, no pinching, no slippage. I've made a couple of modifications to the original instructions and am really pleased with this device. I've owned a Bibhanger for over a year now and have had nothing but problems with it. Mostly from pinched skin which hurt like a SOB. No such problem with this new version I built of the AFB hanger .