as long as it doesn't get dirrect flame or too hot then it will be fine.....but when burned (and mabye when exposed to extreme heat) it produces a very toxic vapor/smoke ......not sure what it does exactly but i do know it's extremely harmful. so if it's just the stem and isn't gettting too hot it will be ok, but it would be more wise to get something else...but if you're in a pinch then it should be fine
slipknotpsycho Reviewed by slipknotpsycho on . copper... i've asked this before and got mixed answers... does anyone know for sure if using a copper stem for your bong is harmful? Rating: 5