Comparison of MIG and TIG Welding

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https://www.fairlawntool.com/blog/mig-vs-tig-welding/#comment-409

OSE Summary

TIG can do all metals. May be relevant to nickel in nickel iron batteries. MIG is easier and faster. Conclusion: both belong in the Global Village Construction Set.

Pro TIG

  • Electrode is not used up if you take care of it
  • TIG allows for precision, high performance work, such as butt-welding pipe for a heat exchanger or welding thin metal
  • TIG may be used without filler wire/rod
  • TIG can be used on any metal - aluminum, steel, stainless, bronze, copper, nickel. For brass, TIG burns the zinc out [1]
  • Doesn't spark and spatter so is cleaner than MIG

Con

  • Slower - metal melting is simply slower, as it works through plasma rather than short circuit. Thus, more expensive to operate (more electricity), and big welds take a long time
  • More difficult - 3 elements - electrode, filler if used, foot pedal to control heat

Pro MIG

  • General purpose, heavy duty welder
  • Easy, fast, brute force farmer welds
  • Much cleaner than stick welding

Con MIG

  • Less reliable for precision work, and can break from crystallization