TIG torches discharge an electrical arc between a tungsten electrode and the metal being welded. This concentrated arc melts the metal without spatter, creating strong, precise, and aesthetically pleasing welds.

When choosing a TIG torch, consider the amperage rating, which determines its power; the torch body style, which affects ergonomics and maneuverability; and the type of electrode holder, such as collet or lever-style, based on preference and application needs.

For safe TIG welding, wear proper protective gear such as welding gloves, helmet, and clothing to shield against intense heat, UV rays, and sparks. Ensure the workspace is well-ventilated to prevent fume inhalation.

TIG welding involves various techniques to achieve optimal results. The 'dabbing' technique involves repeatedly tapping the electrode on the weld puddle, while the 'walking the cup' technique involves moving the torch in small circles to evenly distribute the weld.