Sure it would be possible to make but why? Copper is much more expensive than aluminum and I can't see any benefits other than the bling factor.Originally Posted by mr.sparkle
Keep in mind that copper cools better than aluminum because it conducts heat better, which means that it will also heat up faster if it happens to be cooler than the surrounding air. If you want to make a copper heatsink then it's another story, but cases aren't usually used as heatsinks as well as cases.
If you're really worried about cooling, then try doing a watercooling solution, but there are lots of threads talking about heat issues and lots of people in hot climates have no problems at all.