From what I've heard brass is perfectly safe. Right now my homemade bong has a brass downstem and bowl and it works great. I'd recommend it.
Wolfwood Reviewed by Wolfwood on . Is brass safe? I know Copper and Aluminium (:P) are bad for you, but is Brass? It's an alloy of Copper and Zinc, so does it give off the toxic fumes? Or does the Zinc increase the melting point, making it too hard to burn off fumes? Rating: 5