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Small Cones
Small Orton Cones offer potters a compact and reliable way to monitor heatwork inside the kiln, especially when space is limited or when using kiln-sitters and specialist holders. As part of the trusted Orton pyrometric cones range, each small cone is manufactured from carefully controlled compositions that bend predictably at specific temperature ranges. Small Orton Cones remain a staple in studios where precision, consistency, and repeatable results matter. Browse our range of cones today.
PrevSmall Pyrometric Cones for Limited Space
These pyramid-shaped ceramic devices, known as cones, measure heatwork accurately by combining temperature and time. They are commonly used under the sensing rod of a kiln, where a softening and bending cone signals the correct firing point. The tapered shape of the cone allows flexibility in adjusting the shut-off by placing the thinner or thicker portion upward, giving potters finer control over firing rate and final heatwork.
When available space is tight, miniature witness cones can also be placed on the kiln shelf. These cones offer a visual reference for bend behaviour alongside pyrometers or digital controllers. Although slender, Orton cones are designed to deform at the correct heatwork level. They will also bend if soaked, slowly at first and then more decisively as temperature and time increase.
How to Separate the Cones
Small Orton Cones arrive in pairs rather than as individual cones, and before use, each pair must be separated. To do this correctly, hold the joined cones firmly at the base using your thumb and index finger. Then give a gentle, controlled twist. The cones will easily come apart without stressing the ceramic material or affecting the bend's accuracy.
Once separated, each cone can be placed under the sensing rod, in a holder, or on the kiln shelf as a miniature witness cone. Proper handling ensures you maintain the integrity of the cone and achieve reliable results when monitoring the cone’s tip bending and overall heatwork.
Click here if you would like to see a short video on how to separate the cones.
Click here to download our Orton Cones Conversion Chart
Why Choose Potclays?
At Potclays, we are delighted to position ourselves as a shopping destination for potters of diverse skill levels. Whether you are an amateur enthusiast, an educator, or a professional studio, our carefully curated product range caters to your specific requirements, ensuring you have everything you need to embark on your next creative adventure. Browse potters' supplies, including clay, glazes, kilns, and tools and accessories suited to all skill levels.
Need help finding the right product for you? Get in touch with us today, we're happy to help with any queries.
