Knowing how to repair tension cracks, strengthen weak joints by welding on steel backing plates, or cut and shape parts and adapters from raw steel plating is an asset that worth its weight in gold (yesterday tractors). Welding is what moves the world in many ways due to the fact that transportation and the technology we have today involves welding being done somewhere in the manufacturing process. Gas welding is a process where coalescence is performed by having a gas flame directed at the metal where a filler rod may or may not be used to mix with the molten pool. The energy required for welding is developed by burning the fuel with air or oxygen. The most commonly used fuels are acetylene, map gas which is basically stabilized methyl acetylene propadiene, and hydrogen (Giachino, Weeks,