Quick Answer
The best way to cool pottery after firing is to let it drop slowly into water, which prevents sudden temperature changes that can cause it to crack. This method is especially effective for primitive pottery making. A gradual cooling process is essential to prevent thermal shock.
Cooling Techniques
To cool pottery after firing, it’s essential to avoid sudden temperature changes that can cause it to crack. One effective method is to let it drop slowly into a body of water, such as a lake or a large container. This technique is particularly useful for primitive pottery making and coil method pottery. The water should be at a temperature similar to the fired pottery, usually around 200-300°F (90-150°C).
Water Quality and Sourcing
When sourcing water for cooling, it’s crucial to select a body of water with minimal chemical contaminants. Avoid using water from areas with high levels of minerals, such as salt or iron, as these can cause the pottery to discolor or become brittle. Instead, opt for freshwater sources with a pH level close to neutral.
Post-Firing Treatment
After cooling the pottery in water, remove it from the water and let it air-dry. To prevent the pottery from becoming brittle or prone to cracking, apply a waterproofing treatment. A mixture of beeswax and linseed oil is an effective solution. Apply the mixture using a soft cloth or brush, making sure to cover the entire surface of the pottery. Allow the pottery to dry completely before use.
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