In the first test, 18 different stains were applied to 10 different clear glasses (from different manufacturers) and fired at the same temperature (1100°F) to reveal the relationship between the chemistry of the stain and the chemistry of the glass. The resulting samples were organized into sets in which these correlations could be clearly seen. One can view these results to learn how a particular stain took on different glasses or how a specific glass reacts to different stains.
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