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Orton Large Cones

(Orton Pyrometric Cones)


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The Large and Self-supporting cones are used to measure temperature uniformity and/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze.
A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was successful. The small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kiln-sitter rod. The only true measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.
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ORTON CONES: LARGE CONES - CONE 01 Orton Cones: Large Cones - 01
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 010
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 011
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 012
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 013
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 014
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 016
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 02
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 03
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 04
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 08
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 09
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 1
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 10
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 11
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 12
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 13
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 2
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 3
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 4
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 5
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LARGE ORTON FIRING CONES Orton Cones: Large Cones - 9
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Large Cones (Orton Pyrometric Cones)