The outside of the sealed kiln : The furnaces are fed with coal for two days, when the air reaches the heat of 2500° F. The kiln is allowed four days to cool down— rapid cooling would crack the pottery. When the cups come out they are light brown—called biscuitware at this stage—and still porous.
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https://paperspast.natlib.govt.nz/periodicals/WWKOR19440327.2.9.11
Bibliographic details
Korero (AEWS), Volume 2, Issue 6, 27 March 1944, Page 18
Word Count
54The outside of the sealed kiln : The furnaces are fed with coal for two days, when the air reaches the heat of 2500° F. The kiln is allowed four days to cool down—rapid cooling would crack the pottery. When the cups come out they are light browncalled biscuitware at this stage—and still porous. Korero (AEWS), Volume 2, Issue 6, 27 March 1944, Page 18
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