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Although mostly decorative, customers did use these. The ability to tune the thermal expansion of the glazes (using glaze chemistry) gave him the confidence to produce pieces like this (because it was imperative that the glaze not craze). These high-temperature glazes fired to very durable surfaces (no frit was needed; just the feldspar, dolomite, and calcium carbonate were sufficient to melt them). This was an early success in taking a glaze used by a Plainsman customer and reworking its recipe to eliminate problems (this one was crazing, staining and had poor application properties).
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