The third volume in the series discusses Tungsten Inert Gas (TIG) welding and related advanced processes, including plasma arc welding and laser welding technology. Following an introduction to TIG welding and its characteristics when applied to a range of ferrous and non-ferrous metals, the author discusses the properties of shielding gases and their importance for this process. Material on laser welding and other newer techniques leads into a discussion of commonly experienced defects and strategies for their elimination.