Chapter 5 Of Pottery A Potter 's Handbook By Glenn Nelson And Richard Burkett

1272 Words Nov 12th, 2016 6 Pages
Chapter 5 of Ceramics A Potter’s Handbook by Glenn Nelson and Richard Burkett is all about the ceramics studio. Covering anything from clay bodies to health and safety, this section is a compilation of information on the basics of any ceramics studio. The chapter begins with information on the basic structure of all pottery, which is what makes up the clay body used, and what elements are up for consideration when making one. The chapter begins by explaining that clay is rarely fitting for use without mixing it with other clays to create a workable clay body. There are certain additions to make a clay body more plastic, these are materials like ball clay or bentonite, while others would be added for a less plastic clay mix, such as silica, sand, or grog, all of which open the body to make it more porous and allow less shrinking and cracking. A final characteristic looked for in a clay body is sufficient amounts of flux to create ideal firing temperature and density of a piece, changed by adding feldspar, talc, bone ash, or other materials. There are certain properties of clay bodies such as plasticity, porosity, shrinkage, and fire color to consider when making a clay body. Plasticity may be tested by wrapping a coil around a pencil. The more cracking, the less plastic the mixture is. Clay that is aged will have better plasticity as there is a chemical breakdown that occurs allowing the platelets to become completely wet and slide past each other easier. Wedging is another…

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