Porcelain Clay
No. 65
The unfired color of No. 65 is pure white and very very white when it is
bisque fired. Thin pieces are translucent when fired to Cone 5 (2205°F,
1207°C). It has been greatly improved in plasticity, making it an
excellent body for wheel throwing. It is also an exceptional clay for
sculpture and all other methods of hand building. Porcelain Clay No. 65
is available in de-aired moist form only.
The firing temperature of Cone 5 (2205°F, 1207°C) should be attained
either in bisque or glaze fire. At Cone 5 shrinkage is 12% and
absorption is 0.2%. Maximum firing temperature is Cone 6 (2269°F,
1243°C).
Low Fire Bisque -- High Fire Glaze: Firing AMACOŽ Porcelain Clay
at low temperatures of Cone 05 (1911°F, 1044°C) results in a porous
bisque on which AMACOŽ High Fire Glazes are easy to apply. Then, glazed
pieces are fired to Cone 5 (2205°F, 1207°C). This is the method
generally used for producing ware without crazing.
High Fire Bisque -- Low Fire Glaze: The bone dry greenware may be
bisque fired to Cone 5 (2205°F, 1207°C), then glazed with any AMACOŽ
glaze having a firing temperature of Cone 05 (1911°F,1044°C). Although
glazes are rather difficult to apply on the hard, dense bisque,
sometimes this method is used when glazes of certain colors and textures
are desired.
Single Fire -- AMACOŽ High Fire Glazes can be applied to bone dry
greenware and single fired to Cone 5 (2205°F, 1207°C). Finished pottery
can be obtained in one firing at a savings in firing costs.
Any high fire AMACOŽ glazes and underglazes are recommended for use with
No. 65 clay. See firing instructions for specific instructions.
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