Purpose of Trimetal
So recently I've been smoking my new hookah at this hookah bar about 20min from me and that's how I made all my friends ever since I moved to Sacramento. Last night this guy was commenting on my hookah and saying how beautiful it was. Then he says "I love the different metals on it, it keeps the stem cool". So after my 3 hour hookah session I was cleaning up and was holding the stem. Then I noticed that the top of the stem was pretty damn hot and the middle where the copper was is nice and cool. So is the purpose of Trimetal to keep the stem at a cool temp or just looks?