(Tungsten Inert Gas) TIG welding is very different from MIG (Metal Inert Gas) welding. The second one is created with a consumable electrode, while TIG welds are created with a non-consumable electrode and also includes filler metal. Even though both can be automated, Utah TIG welding is a more complicated process so the equipment is more expensive and difficult to set-up. Another difference is the fact that Utah MIG welding is faster than the other one, as TIG welding uses Tungsten to carry the arc which means it requires more skill and some experience in the craft of welding.
The main difference is in the in the way the filler metal is added to produce the weld. When it comes to Utah TIG welding, the arc is created between a tungsten electrode mounted in a hand-held torch and the work piece to be welded. The MIG process uses a filler metal which is the electrode and the arc is created when the filler metal comes into contact with the work surface.