Llewellyn Kouba on fri 15 feb 02
Can someone direct me where I might find information about or recipes for
Hardpaste porcelain body / book or otherwise.
Llewellyn
iandol on sun 17 feb 02
Dear Llewellyn,
As usual, our English language leads to confusion.
In the context of Porcelain types and some glazes and glasses, the term =
"Hard" relates to the degree of heat needed to induce fusion, not to its =
physical durability when made. The harder a clay body or glaze is the =
higher the temperature at which it has to be fired to achieve maturity. =
Thus, Hard Paste Porcelain will fire in the range of Cone 16 to 20 and =
is composed of kaolin, silica and some sort of fusible stone, such as =
Potash felspar or Cornwall stone.
Paste in the sense used in this term is a translation from the French, a =
contraction of Pate d'Argile, otherwise, plastic clay.
Confusing, no!!
Best regards,
Ivor Lewis. Redhill, South Australia.
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