Hello everyone, not sure if this is the right forum to post to, but I hope you can help me out. I am not a math person and am completely dumbfounded when it comes to engineering. I believe my request should be pretty straightforward for a person with the right knowledge. Basically, I'm thinking of building a small vacuum chamber from an anodized aluminum square cake pan. The dimensions are 8"x8"x4", 14 gauge. I plan on putting a 1/2" polycarbonate lid on the chamber. My only fear is the pan not being thick enough, risking implosion. Also, this is to be used only for low/rough vacuum(max vacuum of around -29.5 inhg. So does this sound plausible?