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Ukar

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About Ukar

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  1. Hello everyone, How many times have I already read in the literature: "The maximum firing temperatures for glazes made with Lead Bisilicate frit is 1950 °F (≈ cone 04)”. Or: "There is never lead in a high temperature vitrified ceramic glaze (stoneware, porcelain): it is quite simply chemically impossible because the melting point of lead is much too low to be used as a high temperature flux (stoneware, porcelain)". However, I note that several renowned international ceramists use the lead bisilicate frit in glazes recipes (mainly based on feldspars) for T° of 2000°F (≈ cone
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