celain were put in a sagger or 60 of hard porcelain. When one of the boxes was filled it was first warmed in a special kiln, then it was put into one end of the firing kiln and passed successively through the four chambers, the heat increasing in each one, until it arrived at the center chamber… … MUFFLE KILNS.
Color in the ceramic industries · Coloring matter · Glazes · Slips (Ceramics)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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