What position should the cone be for correct firing?

Monday 22nd July 2019

Four degrees F. These are self-supporting cones, use these. I was consistently getting the cone on the left using a custom-programmed firing schedule to 2204F. However Orton recommends that the tip of the self supporting cone should be even with the top of the base, not the bottom. So I changed the temperature to 2200F and got the cone on the right. But don't assume your kiln fires cone 6 at 2200F, it could be much higher or lower, depending on your pyrometer.

Pages that reference this post in the Digitalfire Reference Library:

Interpreting Orton Cones, Cones, Cone 6 Drop-and-Soak Firing Schedule, Plainsman Cone 6 Slow Cool (Reactive glazes)

This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of digitalfire.com.