MIG welding 101: Everything you need to know about MIG welders

The process of joining two pieces of metal requires a welding process where heat and small wire create a liquid stream of metal that can be used to create a bridge between the two pieces and glue them together is the general welding process. MIG stands for Metal Inert Gas, a MIG welding is the same process but with a continuous spool of wire and a MIG welding gun. This process is also referred to as Gas Metal Arc Welding. MIG welding process was used during the 1940s to weld aluminum and during the 1950s and 60s, they were used for heavy industrial processed for steel and aluminum. Click this link https://www.ratemywelder.com/best-mig-reviews/ to know more about MIG welders.

Choosing the right wire

Choosing the right wire

  • AWS classification ER70S-3: can be used for all-purpose welding

  • ER70S-6: are wires that are used for more de-oxidizers on dirty or rusty steel.

The right diameter of the wire also matters a good all-rounder choice for welding is .030 in diameter which can be used in a wide range of home and motor-sport applications. Visit ratemywelder.com to help you guide you through the welding process.

Choosing the right gas

  • 75/25 gas blend: It is an all-purpose gas for shielding carbon steel as it produces less amount of splatter and does not burn thinner metals is the most sought after gas for welding

  • 100%CO2: This gas provides deeper penetration through the metal but increases the amount the splatter.

The positioning of the metal

The positioning of the metal

  • Flat Position: It is called the T-joint and the gun is placed a 45-degree angle and an even weld bead is created by avoiding undercuts.

  • Horizontal Position: The process by which the metal is placed in front of you and the welding gun is placed at a 0-1 or 15-degree angle.

  • Vertical position: A tricky way of welding metals as it requires you to fight gravity, due to which you may want to reduce the voltage and amperage by 10% to 15%.

  • Overhead Position: It is the most difficult as you not only have to fight gravity but also the speed of the gun.

Welding Pros and Cons

Welding Pros and Cons


  • A simple and process to learn

  • MIG welding is versatile and can be used for a wide range of metals like steel, nickel, stainless and aluminum.

  • High-quality welds can be produced by using the MIG welding process

  • One of the safest as the gas shield protects the arc.


  • The heat input is not ideal for certain types of welding positions

  • It requires a lot of complicated pieces which includes a welding gun, shielded gas supply, power supply, feeding wire and cooling water. Visit this page for more information about MIG weldings.