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✔ Blog - "Salt Firing"
Other than wood firing which can create a natural ash glaze, another type of atmospheric firing is when ceramicists add salt to the kiln while firing it. Regular ol’ salt, which is sodium chloride, is introduced into a kiln when it’s very hot (around 2250 degrees).
At this high temperature, soda or sodium breaks away from the salt molecule and combines with the silica that’s present inside the kiln; which is basically in everything and one of the main ingredients in clay; to create an atmospheric glaze called a sodium-silicate glaze... more >>