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Clay, Clay, and More Clay

Clay, Clay, and More Clay. Greenware. Clay prior to firing. Leather Hard. Clay has become more firm, but still plastic enough to attach clay to it or carve into it. Bone Dry. Clay has lost all plasticity and moisture Can still be soaked in water to regain moisture

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Clay, Clay, and More Clay

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  1. Clay, Clay, and More Clay

  2. Greenware • Clay prior to firing

  3. Leather Hard • Clay has become more firm, but still plastic enough to attach clay to it or carve into it

  4. Bone Dry • Clay has lost all plasticity and moisture • Can still be soaked in water to regain moisture • Clay must be bone dry prior to being fired in the kiln • Clay is very fragile in this state

  5. Bisque Firing • The first round of firing clay • Clay changes color and becomes hard • It cannot be soaked in water to manipulate • Now, it can be glazed

  6. Glaze Firing • What is glaze? • A surface coating on top of clay once it has gone through bisque firing • What is it made from? • Glaze contains silica, which forms glass

  7. Glaze Firing • Things to keep in mind while glazing • Use a soft bristled brush to glaze • If the entire clay body is glazed and set flat on the shelves in the kiln, the piece will adhere (stick) to the surface • Too little glaze will create an uneven coat and transparent look • Too much glaze will cause the glaze to run during glaze firing

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