I'm looking into building my own case and I am considering using aluminium, acrylic, or both. No pieces would need to be larger than a mini-tower case as I would like it to weigh <10 pounds (~4.5kg if I am not mistaken). That said, I was wondering if anyone has experience using aliminum sheet. What thickness would be adequate for supporting a PC. 1/4" acrylic seems to good enough for just about anything. 1/8" for drive cages. But then again, that's just my guess.