With the cost going down and the quality going up on TIG welders in the last 5 years we are getting a lot more beginner welders asking questions about what a TIG can do and where it can be used. Understanding how the welding process works with a TIG welder will allow you to understand if one is the best welder for your shop. TIG welding is the preferred method among most high end weld shops but it does have its limitations.