Quote:
Originally Posted by GregWeld
AND --- If you're going to weld on a gas tank…. Clean it with plain old soap and water --- and either fill it with ARGON or CO2 "inert" gas --- or drop some DRY ICE in it and wait for it to "smoke" before welding.
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This is a great tip. People get hurt every year welding on tanks. If you don't have Argon or CO2 readily available dry ice is at most walmarts now.
I can see how the exhaust gas would work as well but you are trading an explosion hazard for a carbon monoxide hazard.