psi --> pounds lifted? I have a very, very small air compressor that puts out 0.8 bar or 11.6 PSI. I would like to know how to compute if I were to put a plastic skin over the top of the output (like a balloon), how much weight could be lifted by the air compressor. I realize that part of the equation is going to be the stretchiness of the skin. Here’s the skin I'm using right now: https://www.amazon.com/gp/product/B000RFU0PS/ref=oss_product (Of course, I’d prefer to understand how the skin factors into the equation so that I can learn and do this myself.) For a simple visual, think laying a book on top of an inflating balloon. How much can the book weight before the compressor maxs out? Thank you in advance for some guidance.