Temperature and Maturation
How Temperature Changes Clay
As a kiln is firing up and cooling down, the changes in temperature make some profound changes in the clay. The change is nearly mystical in its complete metamorphosis, and might be deemed so if it were not so common.
Why Clay Bodies Shrink
All clays shrink. But not all clays are created equal. Different clay bodies experience different amounts of shrinkage. It depends upon the clay's particle size and on how many and what type of impurities are present in the clay body.
How to Dry Pottery and Clay Objects
Drying pottery and clay objects correctly is one of the most important steps prior to firing clay. Improper drying can result in cracking, warping, and breakage either before firing or during firing.