Burner to cubic inch relationship in Gas Forges Posted December 20, 2015 I also didn't know what to do with the burner cone. I didn't feel like flaring my own custom cone so I turned the threads out of the ID of a concentric reducer made from stainless. Is this going to work or is it too much of a transition from tube to flare for the flame? I am also currently looking for a gas regulator and hose set up is there anything particular that I should be looking for? I wish i could light it and just find out for myself but I figured I needed to understand a little bit more about the exact regulator that I need before lighting it up for safety reasons among others. Please keep in mind that I am new to Gas Forges.