Ok, I've been doing some searching for a great way to cool computers. Fans for years have been the default, then came water coolers. With water coolers starting to sell, I started to wonder, if it would be possible to make a water cooler, that could hold liquide nitrogen? With current water systems, no! As the plastic would crack with such cool temps. I'm not so sure about coper or metal. Does anyone know any kind of metal that could hold liquide nitrogen?