Clay No. 46
AMACOŽ Buff Firing Clay No. 46 is supplied in dry and moist modeling
formulas. The moist clay is de-aired to insure a homogenous mixture
which needs little or no wedging. The dry modeling clay is finely ground
and air floated before packaging. It mixes readily with water to form a
smooth and plastic modeling clay.
This stoneware clay is ideal for making durable dishes, sculpture,
planters, patio vases and other utility and decorative ware. De-aired
moist clay and airfloated dry clay are excellent for all hand methods of
building, push and pull, coil, sculpture and throwing on a wheel.
When fired at the recommended temperature of Cone 5 (2205°F, 1207°C),
the hard, dense semi-vitreous bisque is buff color with shrinkage of 12%
and absorption of 1.8%. At Cone 10 (2381°F, 1305°C) the very dense,
vitreous bisque is a soft gray with a shrinkage of 13.2% and absorption
Low Fire Bisque -- High Fire Glaze: Firing No. 46 stoneware clay
at low temperatures of Cone 06-05 (1855°-1911°F, 1013°-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 range of Cone 06-05 (1855°-1911°F, 1013°-1044°C).
Glazes are rather difficult to apply on the hard, dense bisque, but
sometimes this method is used when glazes of specific colors tend to
craze and textures not available in high fire glazes 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). Although finished
pottery can be obtained in one firing at a savings in firing costs, this
is a hazardous procedure and a greater loss may be expected.
If bisque and glaze are fired at 1900°F (1038°C), pieces may craze.
However, many prefer crackle glazes and when textured glazes are used,
crazing is scarcely perceptible.
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