I want to make a couple Pneumatic Pop Up props, but the already built mechanisms made out of Steel Tubing you see for sale online are a little too expensive. I have seen a couple How To's making them out of Wood and Strong Hinges and some out of PVC. Has anybody ever tried this? Obviously this would be a much cheaper route but my number one concern is Safety. I figured if its Secured down properly and all the materials are strong and secured then it might work but I'd rather get some feedback first. Thanks!