What does a reducing atmosphere in a kiln do?

Limits oxygen during firing.

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  1. Limits oxygen during firing ✔
  2. Adds extra oxygen
  3. Cools the kiln quickly

Why: A reducing atmosphere is oxygen-poor. It is made by restricting air or adding excess fuel, which affects iron colors.

Huh, didn't know that: A reducing atmosphere is oxygen-poor. It is made by restricting air or adding excess fuel, which affects iron colors.

The dad joke
Reducing atmosphere means less air, not less pot.
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References

Answer: Limits oxygen during firing. A reducing atmosphere is oxygen-poor. It is made by restricting air or adding excess fuel, which affects iron colors.

  1. Pottery en.wikipedia.org/wiki/Pottery
    An oxygen-deficient condition, called a reducing atmosphere, is generated by preventing the complete combustion of the kiln fuel
    Checked 2026-11-07.

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