Orton Cones are a ceramic aid that, when heated in a kiln, will bend. It will give a value of 'heat work', which is a calculation of both temperature and time. Built for cone 07.
Tax Excluded
Cone 07 temperatures are based on a kiln firing at 15°C, 60°C and 150°C degrees per hour when climbing at the last 100 degrees to the top (target) temperature.
• 15°C - 962°C
• 60°C - 976°C
• 150°C - 987°C
These can be used in oxidisation (electric kilns) and in reduction with other fuelled kilns*.
See further advice in our knowledge base on 'Orton cones'.
*except between values of '010' to '3' as they contain iron oxide. Use iron-free ones for firings between this range.
Great help getting my kiln temperatures right; I've had far better results since following up the evidence of the cones; turns out my kiln fires 50° hotter than the temperature display shows...makes quite a difference!
