Learning how to MIG weld is just comparable to all other welding processes because more or less it has the same techniques—whip, circles, or weave for most joints. Those who are already considered experts on how to MIG weld first began as Shielded Metal Arc Welders.
If you choose to learn a more difficult welding process before learning how to mig weld, then it would seem that mig welding is just very easy for you. However, to ensure that you produce a good quality weld, you must have good welding equipment (including welding gear) and practice safety precautions to the letter in addition to having good welding skills.
There are two ways on how to mig weld. The most common welding technique is known as the forehand method. This involves pushing the welding gun toward the direction of the weld. Forehand welding results to a shallow penetration and a flat, wide and smooth surface. The other process is known as the backhand method. This is involves dragging the welding gun like in stick welding. This results to a deep penetration weld that is narrow and high in the center.
To start the welding process, the wire stick out must measure around three-fourths of an inch. A lesser amount is also acceptable but more than three fourths is not advisable because a longer wire stick will not let the shielding gas function properly.
Flat welding is by far the easiest in mig welding. In this process, the mig gun is pushed, with the angle of the gun pointing straight down to leaning toward where the direction of the weld is heading up to 35 degrees. Vertical down should also be pretty much easy, where the welder starts at the top and works downwards. The mig gun needs to be tilted up at an angle between 35 to 45 degrees.