Back
My AccountOrton Pyrometric Cones
Find pyrometric cones and bars for monitoring your ceramic firings. Select a category below to explore large, small and self-supporting cones, alongside mini bars, for different kiln setups.
Shop by Category
Please select a category below:
Monitor Your Firing with Orton Pyrometric Cones
Monitor Your Firing with Orton Pyrometric Cones
Pyrometric cones have been used to monitor ceramic firings for more than 100 years. They can help you determine when a firing is complete, identify differences in heatwork within the kiln and recognise when a firing has not progressed as expected.
Made from carefully controlled ceramic compositions, cones soften and bend as they are exposed to heatwork during firing. Their final position provides a visual indication of the combined effects of time and temperature in the kiln.
Important: Do not confuse cone numbers prefixed with a 0 (zero) with those without. Cones with a leading zero are used for lower-temperature firings, while cones without a leading zero indicate considerably higher firing conditions.
More details are available on the Orton website.
FAQ: How do I use Orton Pyrometric Cones?
Download our Temperature Equivalent Chart in °C for Orton Pyrometric Cones
Why Choose Potclays?
Our selection brings together several cone formats and firing ranges, with guidance to help you choose the right cones for your kiln.
We also supply kiln furniture and batt wash for kiln preparation and maintenance. For help finding the appropriate cone type or number, contact our team with details of your kiln and intended firing.
