Reduction - Cone 10 stoneware glazes are unique in that the firing plays such an important role in the process. Most of the Cone 10 glazes we offer are intended to be enhanced by reduction firing. Impurities and trace metals in the clay and glaze will react with carbon in the kiln atmosphere to create spotting. Reduction firing also causes glazes to attain a warm color and a smooth, durable surface quality.
Oxides react in various and sometimes spectacular ways depending on the glaze compositions.
Each firing creates a certain unique quality in the ware. Cone 10 oxidation firings come into play when more controlled, stable and reliable results are needed. Many commercial manufacturers employ high fire oxidation to produce durable ware with reliable results. Items like dinnerware, jewelry and sanitary ware are often fired in this range and atmosphere. Clear, formulated specifically for color development with or without the use of opacifiers.