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SESK: Stuff Everyone Should Know · sesk.info/weld-plasma-ionized-gas

What does a plasma cutter use to cut metal?

A jet of ionized gas that conducts electricity.

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  1. A flame of oxygen and acetylene
  2. A beam of ultraviolet light
  3. A jet of ionized gas that conducts electricity ✔

Why: Plasma is gas so energized it conducts electricity. A plasma cutter uses that hot jet to melt and blow through metal.

Huh, didn't know that: Miller says plasma cutters can cut aluminum, stainless steel and cast iron, which oxy-fuel is generally not used on.

The dad joke
Q: Why can't you take electricity to social outings? A: Because it doesn't know how to conduct itself.
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References

Answer: A jet of ionized gas that conducts electricity. Plasma is gas so energized it conducts electricity. A plasma cutter uses that hot jet to melt and blow through metal.

  1. Choosing Between Oxy-Fuel and Plasma Cutting (Miller) www.millerwelds.com/resources/article-library/choosing-between-oxy-fuel-and-plasma-cutting-systems
    Plasma is an ionized gas that conducts electricity
    Checked 2026-10-10.

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Trades & ShopWhat gas does a typical plasma cutter run on?Trades & ShopFor steel thicker than 1 inch, which cutting tool is capable of greater speeds?Trades & ShopOxy-fuel cutting is mainly used on which kind of metal?

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