Awesome pipe. I tried to make one. Not nearly as easy as it looks. Especially to make art like you are. Sweet.The pipes hold up pretty well. I don't coat the inside of the bowls for obvious reasons, but after each smoke session, the bowl naturally gets coated with a little resin and that acts as a protectant. Here's a pipe that has probably seen 100 or more flames:
Beautiful looking grow you have going here, Gee.