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PQotW: Week 25

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Week 25


      1. _______________ additions that may be added in the raw stage are used to enhance the surface of the clay. The materials burn out completely or leave just a trace of ash, leaving a pitted surface over which color may be applied.

        1. Incombustible

        2. Only organic

        3. Combustible

        4. Metallic

      2. Crawled Glazes, Volcanic Glazes, and Crackle glazes are all examples of ____________glazes.

        1. Reduction

        2. Oxidation

        3. low-temperature

        4. Textured

      3. It is said that potters are either mud or fire people. There can be no better way to understand the action of fire on clay thatn to participate in smoke or raku firing. These techniques and others are known as _______________ firing techniques.

        1. Oxidation

        2. Alternative

        3. Reduction

        4. sophisticated

      4. This technique, using a fuel burning kiln and a smokey cooling atmosphere, places a thin metallic film on the pottery. It was perfected by Persian potters and later carried to Spain, from whence it spread to other parts of Europe. It is known as ________________________ firing.

        1. luster reduction

        2. reduction

        3. luster oxidation

        4. crystalline glaze



This weeks questions come from The potters guide to ceramic surfaces, by Jo Connell, c. 2002, Krause Publications.


Note from Pres: This book has a superb explanation of many techniques for developing surfaces. It is well organized and quite factual with lots of visual explanations.


      1. 3. Combustible _ quote from the text

      2. 4. Textured-In many respects, texture can be considered as a glaze fault. But just as a gardener may see aweed as a”plant in the wrong palce,” the desirability of texture in a glaze depends upon whether its presence is deliberate. . . from subsection listing Crawled, Volcanic and Crackle glazes as being Textured glazes. Includes recipes for all 3 at differing temperatures.

      3. 2. Alternative-Intro to Chapter 3  Alternative Firing Techniques

      4. 1. Luster reduction-WE REFER HERE TO traditional and in-glaze luster techniques not to he confused with oxidized lusters. Luster decoration is produced by a thin metallic film on the surface of a glaze. This ancient technique was brought to perfection by Persian potters and was later carried to Spain, from whence it spread to other parts of Europe. Different methods are utilized and developed in personal ways through experimentation. Perseverance is necessary to achieve success, because the chemistry involved is complex. Luster firing can, however, be extremely rewarding, and sometimes becomes compulsive!

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