Re: all bisque vs all porcelainPosted by Peter Dohnt on April 26, 2008 at 06:29:38: In Reply to: all bisque vs all porcelain posted by jo stro on April 20, 2008 at 20:52:30: Spot on Kwan :) it is an unfortunate thing that bisque and porcelain seem to be used interchangeably. Porcelain is the material approx 45-50% Kaolin, 40-45% Nepheline syenite and 5-15% Silica (different mixes produce differing temperature for vitrification) and other additives as "secrets" of differing manufacturers. Bisque is a term applied to the firing of a body (clay - porcelain (just a very very nice clay)) without the use of a glaze and relying on the vitrification of the piece to produce the finish. Bisque porcelain dolls (antique or modern) will carry the surface finish from mat to "oily" or gloss dependent almost entirely on the heat work the piece was subjected to in the firing. The term bisque as it relates to general pottery is different again but still means basically the same - a non glazed firing of a piece.
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