clay, clay, and more clay

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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 - PowerPoint PPT Presentation

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Clay, Clay, and More Clay

Clay, Clay, and More ClayGreenwareClay prior to firing

Leather HardClay has become more firm, but still plastic enough to attach clay to it or carve into it

Bone DryClay has lost all plasticity and moistureCan still be soaked in water to regain moistureClay must be bone dry prior to being fired in the kilnClay is very fragile in this state

Bisque FiringThe first round of firing clayClay changes color and becomes hardIt cannot be soaked in water to manipulateNow, it can be glazed

Glaze FiringWhat is glaze?A surface coating on top of clay once it has gone through bisque firingWhat is it made from?Glaze contains silica, which forms glass

Glaze FiringThings to keep in mind while glazingUse a soft bristled brush to glazeIf the entire clay body is glazed and set flat on the shelves in the kiln, the piece will adhere (stick) to the surfaceToo little glaze will create an uneven coat and transparent lookToo much glaze will cause the glaze to run during glaze firing

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