Why must clay be completely dry before firing?

Trapped moisture can cause steam explosions.

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  1. Wet clay will not fit in the kiln
  2. Trapped moisture can cause steam explosions ✔
  3. Dry clay fires faster

Why: Residual deep moisture can cause steam explosions during firing. Bone-dry clay is ready to fire.

Huh, didn't know that: Residual deep moisture can cause steam explosions during firing. Bone-dry clay is ready to fire.

The dad joke
Dry clay avoids a steamy surprise.
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References

Answer: Trapped moisture can cause steam explosions. Residual deep moisture can cause steam explosions during firing. Bone-dry clay is ready to fire.

  1. Pottery en.wikipedia.org/wiki/Pottery
    any residual deep-seated moisture can lead to catastrophic steam explosions during the high-heat firing process
    Checked 2026-11-07.

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