Clay and Glazes for the Potter

Clay and Glazes for the Potter is a comprehensive reference book that has become an essential resource for both amateur and professional potters. It offers in-depth knowledge about various types of clay and glaze formulations, providing valuable insights into the chemistry and techniques that transform raw materials into beautiful ceramic art.

Understanding Clay

Clay is a natural material composed primarily of fine-grained minerals. The plasticity of clay allows it to be shaped, often with the use of a potter's wheel, into a variety of forms. Key types of clay used in pottery include earthenware, stoneware, and porcelain, each with its own properties and firing requirements. The book delves into how variables such as alumina, silica, and iron oxide affect the clay's color and texture.

Glazing Techniques

A glaze is a vitreous coating applied to pottery to create an impermeable surface and enhance aesthetic qualities. Glazes can be made from a variety of materials including feldspathic rocks, plant ash, and lead compounds. The book provides detailed recipes and methods for creating different glaze effects such as celadon, raku, and tin-glazing.

Special Glazes and Surface Effects

One of the notable features of the book is its exploration of special glaze techniques like salt glaze pottery and soda firing. These methods, which involve the introduction of sodium compounds during the firing process, create unique textures and finishes that are prized among ceramic artists.

Historical and Modern Influences

The book places a strong emphasis on both historical context and modern developments in ceramics. For example, it discusses the role of traditional methods from various cultures, such as the Longquan kiln's contribution to celadon glazes in China. It also highlights contemporary trends and innovations within the ceramics industry, reflecting changes over the past few decades.

Influential Potters and Authors

The text references various influential figures in pottery, including Jack Doherty, known for his work with soda-fired porcelain, and David Drake, a historic American potter. These potters have significantly contributed to the evolution of pottery and glazes through their unique styles and techniques.