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This is a cone 6 oxidation transparent glaze having enough flux (from a boron frit) to make it melt very well, that is why it is running and pooling. Iron oxide has been added (around 5%) producing this transparent amber effect. Darker coloration occurs where the glaze has run thicker. This simple mechanism enables the glaze to automatically highlight contours, emboss and textures on the underlying surface. This mechanism works with any color in almost any transparent base glaze, as long as bubble clouding and crystallization do not occur. Entire lines of commercial glazes are based on this mechanism.
K2O and Na2O produce the brilliant gloss like this, but they also cause crazing. They come from feldspars, nepheline syenite and are high in certain frits.
| Articles |
Reducing the Firing Temperature of a Glaze From Cone 10 to 6
Moving a cone 10 high temperature glaze down to cone 5-6 can require major surgery on the recipe or the transplantation of the color and surface mechanisms into a similar cone 6 base glaze. |
| Glossary |
Mechanism
Identifying the mechanism of a ceramic glaze recipe is the key to moving adjusting it, fixing it, reverse engineering it, even avoiding it! |
| Glossary |
Glaze Recipes
Stop! Think! Do not get addicted to the trafficking in online glaze recipes. Learn to make your own or adjust/adapt/fix what you find online. |
| Glossary |
Glaze thickness
Many ceramic glaze benefits and issues are closely related to the thickness with which the glaze is applied. Many glazes are very sensitive to thickness, so control is needed. |
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