Stand - Up Type Glazes, Part 4
In addition to the smooth, enamel-like, stand-up type glazes described in the foregoing sections of this chapter, there is another material which, while quite different, is worthy of consideration. This other material is a granular form of stand-up glaze, which produces a finish reminiscent of the sugar eggs one often sees at Eastertime; the appearance of these glazes (when fired) has also been described as being like velvet or suede. These glazes are not suitable for use on dinnerware, etc., as their textured surfaces would make proper sanitation impossible; but they are especially suitable for lamp bases, plaques, vases and even areas of figurines.Granular stand-up glazes can be purchased in ready-to-use form, or they can be made up very easily by the hobbyist with readily available materials. The chief ingredient of these granular glazes is fine silica sand, which can be obtained from most lumber and building supply merchandisers. Silica is made up of two of the earth's most abundant elements - oxygen and silicon — and is widely used in the manufacture of various products, including glass and ceramic materials. When used to make stand-up type glazes, the ability of silica sand to withstand high temperatures (without distortion) makes it possible for the hobbyist to obtain effects obtainable in no other way. It is also possible to make granular stand-up glazes with the odds and ends of glazes which seem to accumulate in every ceramist's studio.
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May 19, 2012