mig welding

Each of the four welders above has its pros and cons and are uniquely suited for particular welding jobs. Here is a comparison of the four welding types and the metals they are suited for working on.

MIG welding involves continuous use of a consumable electrode which produces a spark in the gun. This spark melts the surface and allows the surfaces to be joined, creating the weld. 

TIG, on the other hand, involves passing a current through a non-consumable electrode to join the metal surfaces.

However, when choosing between the two there are several factors to consider.