MIG welder or GMAW (Gas Metal Arc Welding) is a tool used in arc welding process, in order to join short circuit between two materials, which are: a wire electrode, and the metal in a welding process. From time to time, MIG welder requires skills in application, though it is said to be easy to use. It does not stop a lot of people to use it for daily needs. There are a lot of people who have been trying and practicing to use it for home necessity, farming activity, as well as making artworks.
It is originally developed in the 1940s to weld aluminum before being used for welding steels. The further developments were starting around 1950s and 1960s, giving more flexibility in application. Resulting in being used as the most common industrial process.
It is a very useful tool for various types of metal materials to weld. It includes stainless steel, carbon steel, aluminum, copper, magnesium, and others. It works by producing heat from the short circuit and gas to melt the metal so it is mixed together. It requires three elements to work: electricity, electrode, and shielding gas. The electricity is used for producing heat, the electrode is to fill the joint, while the gas is used to shield the weld from the air.