What is the primary difference between MIG and TIG welding?

The primary difference between MIG (Metal Inert Gas) welding and TIG (Tungsten Inert Gas) welding lies in the method of providing filler material during the welding process. In MIG welding, a continuous wire feed system is employed, where the welding wire is automatically fed through the welding gun. This allows for a more continuous and efficient welding process, particularly for industrial applications and thicker metals.

In contrast, TIG welding requires the welder to manually feed a separate filler rod into the weld pool. This method provides the welder with more control over the weld, enabling more precise and intricate work, especially beneficial for thinner materials and situations where a high level of skill is necessary.

Understanding the mechanism of filler material delivery is crucial, as it affects the type of projects each welding method is suitable for, as well as the skill level required. Thus, the continuous wire feed in MIG welding represents a significant operational distinction compared to the manual feeding in TIG welding.