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A procedure for preparing clay or a clay body by hand: the lump of clay is repeatedly thrown down on a work bench; between each operation the lump is turned and sometimes cut through and rejoined in a different orientation. The object is to disperse the water more uniformly, to remove lamination and to remove air. Whiteware
Simple clay vessels such as bowls and cups of various sizes can be formed and shaped by hand using a methodical pinching process in which the clay walls are thinned by pinching them with thumb and forefinger. It is a basic pot making method often taught to young children or beginners. The process begins with a ball of clay.
Clay is used in many modern industrial processes, such as paper making, cement production, and chemical filtering. Between one-half and two-thirds of the world's population live or work in buildings made with clay, often baked into brick, as an essential part of its load-bearing structure.
The "clay body" is also called the "paste" or the "fabric", which consists of 2 things, the "clay matrix" – composed of grains of less than 0.02 mm grains which can be seen using the high-powered microscopes or a scanning electron microscope, and the "clay inclusions" – which are larger grains of clay and could be seen with the naked eye or ...
For example, dry paper clay is stronger than the same clay without the fiber, so work can be made thinner, and more delicate. Using paper clay requires less technical skill than conventional clay, so beginners can focus more on the creative expression of their ideas.
[26] [27] [28] Typical deflocculant additions used for a Vitreous China casting slip are 0.1-0.65%; the rheological properties of the clay components are the main influencing factors for the dosage. [29] A mathematical formula developed by Alexandre Brongniart of Sèvres Porcelain is used to determine the dry material content of the slip. This ...
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