Given that i am trying to minimize weight I wont be putting my stewart poweramp into a rack. I managed to fit it into my backpack and I will just place it in a thick cardboard box for protection for transport. What i need to do is have about a 3cm gap b/n the bottom of the amp and whatever it rests on (most likely the cab) for breathability. My idea is to use 4 "legs" that are thin-ish but about 3cm tall. My question is what material should i use? The amp shuts off at 87 degrees celcius so the material should be able to stand that kind of heat without melting or being destroyed, catching fire etc. Plastic may melt. Would wood work? at what temperature would the wood start burning? Maybe some kind of rock (hopefully light) like a crystal or lava. But then they are hard to get the right shape. Am I crazy? oh probably.. but hey, whatever it takes. Suggestions?