Tig Mig welders are versatile tools used in various industries for welding tasks. Whether you are a professional welder or a DIY enthusiast, understanding the differences between Tig and Mig welding processes and how they apply to different projects can Best MIG Welders help you choose the right welder for your needs. Understanding Tig Welding What is Tig Welding? Tig welding, also known as Gas Tungsten Arc Welding (GTAW), utilizes a non-consumable tungsten electrode to produce the weld. A separate filler material may be used if necessary.