Plainsman Clays | P300
$0
Suggested retail price. In-store prices and availability may vary by location.
Mid fired, Off-white burning, Smooth, Medium plastic, Vitreous, Porcelain, Throwing clay body
P300 is a kaolin-based porcelain for mid-temperature work, and one of the whitest bodies we make.
Plasticity is excellent for a porcelain – many potters rate it at or above M370 – and the pugged clay has a distinct feel that many prefer.
Two things to know before you start: P300 is not translucent at cone 6, and its fired shrinkage is high, 7.0–8.0% at cone 6.
SiO₂ 63.1 · Al₂O₃ 25.1 · K₂O 2.1 · TiO₂ 0.8 · Na₂O 0.6 · CaO 0.3 · Fe₂O₃ 0.3 · MgO 0.1 · FeO 0.0 · LOI 6.6%
Mid temperature porcelain · off-white burning · vitreous · throwing body
Smooth and fine-grained, with medium plasticity and a distinct feel in the pugged state
Throwing · functional and decorative porcelain
Cone 5 · 6 · 7 – like all of our medium temperature clay bodies, P300 is designed to fire at cone 6 (1222 °C / 2232 °F)
Off-white – whiter than M370, and close to Polar Ice. Not translucent at cone 6.
Dry 5.0–6.0% · fired 6.5–7.5% at cone 5, 7.0–8.0% at cone 6, 7.3–8.0% at cone 7
Cone 5 1.5–2.0% · cone 6 0.1–0.5% · cone 7 0.0–0.2%
Every figure is a measured range from the Plainsman lab, not a single nominal number. Cone equivalents are Orton self-supporting cones at 108 °F/hr.
Polar Ice is our whitest and most translucent cone 6 porcelain, prized for its brilliant white fired colour and exceptional translucency. Its unique properties make it a truly striking clay body, although it requires more care and skill on the wheel.
Also available:
M370 is one of our most popular white, medium-fired stoneware clay bodies. It has excellent plasticity, which makes it a pleasure to throw, and its lighter off-white colour gives you an ideal canvas for decorating.
Also available:
M340 is one of our most popular general-purpose clay bodies – plastic, medium-fired and buff burning, and it throws and hand-builds equally well. Best fired to cone 6.
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