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How do I fire my ware?

Shivering

Shivering: Sometimes a piece of glaze will crack off, normally near a rim or at edges. Some clay may be attached to the glaze piece that cracks off. This occurs because stress has built up between the clay and glaze that can't be absorbed. It is often caused by over-sponging which takes away the fine clay particles and leaves behind the groggier clay particles which are not elastic enough to absorb the stress.

Comments

9/20/2011 2:03:55 PM
PM993G said:

It is simply because the CTE of the body is much much greater than the CTE of the glaze.

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