I wouldn't suggest copper m8 as its corrossion is highly poisonous
smknjoe Reviewed by smknjoe on . Bongs: Glass vs. Acrylic, Safe/Unsafe Materials I'm looking into buying or building my own bong, or maybe both... 1.) What are the issues when it comes between Glass and Acrylic? 2.) When building your own, what are some common materials that're safe and unsafe to use? Where does Copper stand? THanks anyone who can help. Rating: 5