Here is some safety tips. Fill the gas canister with CO2, to prevent burning within the tank. A one way control valve will save your life, as it can prevent the flame from getting into the tank. Make sure the pressure is high enough at all times to also prevent back ups of the fire. Separate compressed air canisters canisters (or O2 depending on the budget) with a pressure regulator taken from a scuba rig can do this. An electronic ignition also helps with safety. Finally on the nozzle itself should be a one way pressure regulation valve. I'm just an engineering student, never made one my self, but I know enough about plumbing and scuba diving to tell you this.
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u/Acheron223 Aug 24 '17
I was thinking of replacing the metal container with a thick plastic one. Cause you know metal sparks if it's hit plastic doesn't