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GMAW or Gas Metal Arc Welding. More commonly called MIG welding this welding type is the most widely used and perhaps the most easily mastered type of welding for industry and home use. The GMAW process is suitable for fusing mild steel, stainless-steel as well as aluminium. GTAW or Tungsten Inert Gas.
Sheet metal fabrication shops take raw material that may be aluminum, steel, copper, or brass and cut them to specification. The most common cutting method is shearing, also known as die cutting. Specialized saws such as band saws and chop saws are also used.