Why does my 8, 10, and 12 sided kiln lid open more in the front when I fire?

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Why does my 8, 10, and 12 sided kiln lid open more in the front when I fire?

When this happens, it almost always means the hinge is out of adjustment or set too low on the back of the kiln.

  1. When the kiln is cold, remove the spring tension if there is a spring (spring removal step-by-step in the assembly instructions in the kiln manual) and just loosen all of the screws that hold the hinge to the kiln body.
  2. Then raise the kiln body part of the hinge until starts to pick up the back of the lid.
  3. Lower it down until the lid barely touches the top kiln section and tighten all the screws again.
  4. If this does not fix it try a firing without the hinge spring on the kiln.
  5. Try a firing with the hinge not connected at all just to see what is causing the problem.

How to adjust the spring hinge properly: