Bone Ash, Translucent for Bone China, FreeShip.
$8.83
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Bone ash has been used in ceramic bodies for over 200 years primarily to make bone china. They even know the specific year and person who "invented" bone china, Thomas Frye at the Bow porcelain factory in 1748. Large percentages of bone ash added to porcelain bodies results in high translucency, but has been known to be difficult to produce. It's made like it's name implies, by calcining bone (usually cattle bone). Calcining clay drives off both the free water at around 420 F and the chemically bound water between 650 F and 1300 F (different sources give different ranges; I've seen 900-1300 F, 660-1470 F, and others)....(see more)
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