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SESK: Stuff Everyone Should Know · sesk.info/weld-plasma-compressed-air

What gas does a typical plasma cutter run on?

Compressed air.

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  1. Pure acetylene
  2. Compressed air ✔
  3. Pure hydrogen

Why: Most hand plasma cutters need an electrical supply plus compressed air, which gets turned into plasma.

Huh, didn't know that: Miller says a hand-held system typically cuts up to about 1 inch of metal.

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Why did the iron sneak out early on Friday? It ran out of steam.
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References

Answer: Compressed air. Most hand plasma cutters need an electrical supply plus compressed air, which gets turned into plasma.

  1. Choosing Between Oxy-Fuel and Plasma Cutting (Miller) www.millerwelds.com/resources/article-library/choosing-between-oxy-fuel-and-plasma-cutting-systems
    Plasma typically requires a source for compressed air and electrical power.
    Checked 2026-10-10.

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