TIG (Tungsten Inert Gas) welding and MIG (Metal Inert Gas) welding are two common types of arc welding. Although they have similarities, they differ significantly in technique and application. TIG welding uses an electrode that is not melted or consumed during the welding process and offers greater precision and control. This method is preferred with thinner materials and projects requiring high-quality, clean welds, such as in aerospace or automotive work. On the other hand, MIG welding uses a consumable wire electrode that is fed continuously through the welding gun, making it faster and easier to learn. This method is better suited for thicker materials and is commonly used in construction and fabrication. To sum up, TIG is preferred for more detailed work, while MIG is typically used for getting the job done quick.