Pyrometric Cones and Bars

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Pyrometric Cones


Pyrometric cones measure heatwork in a kiln. Made from the same ceramic materials as the pottery pieces being fired, they respond to firing in the same way clays and glazes do. Cones are made for a range of heatwork measurements spanning cone 022 to cone 12, and four firing ranges — ultra-low fire, low-fire, mid-fire, and high-fire. To choose the correct pyrometric cones for your purposes, consider the cone numbering system, which has a zero in the center. The cones farthest left of zero are for lower heatwork than those closer to zero. For example, cone 06 is much cooler than cone 6. Shop Blick for pyrometic cones and pyrometic bars for use in kilns and kiln sitters.