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Home > Resources > Glossary > Definitions - V > Viscosity


Property of flow; a highly viscous glaze is stiff, does not flow much during the fire, and generally results in a matte surface; A glaze of low viscosity is fluid, vacillates during the melt, is usually glossy, and can cause other glazes or decoration to become fluid. Stiffness. Glass becomes less viscous as it is heated.


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