I ended up using 1/2 threaded rod. Its a heavy solid base, can't complain. My next project would be to build a natural gas forge. I have searched the forums but hadnt found what im looking for. I want to use a old 134 freon tank, ceramic insulation coated with a ceramic paste. I am having trouble deciding on how to build a burner, I want to use 1/2 inch pipe since I have enough of it. Any ideas would help.