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Pyrometric Cones are used on a shelf inside a kiln or in a kiln sitter to determine when a firing is complete, if the kiln provided enough heat or if there was a problem during the firing. Orton cones are made from carefully controlled compositions so that they bend in a repeatable manner over a very small temperature range. When used in a cone holder or sitter, the cone tip sags until it reaches a point level with the base indicating the kiln has properly fired. Cones have been used in ceramic firings for more than 100 years and Orton has the history and experience to provide the very best product. The number of this cone is 5 which bends at an approximate temperature of 2185° F, depending on firing conditions.
Tom T
2025-07-25 10:12:37
We have used the small Pyrometric cones for 40 years. These cones seem to be accurate and work well. I wish that they did not comes with two attached together since occasionally one breaks when they are taken apart. I liked the old way of single cones better.
Ellay
2025-05-12 14:38:02
Can't break apart without ruining both of them.
kilkee
2025-02-14 13:30:18
My self supporting cone do NOT self support. I have tried several and they don't stand up by themselves.
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