Getting accurate firings in our test kilns time after time.

Tuesday 16th September 2014

The blue line on this graph is from the Orton cone chart for 108F/hr. But those are not the target temperatures for our test kiln cone firings. We use the red line to program the controller for each cone. Where is that red line from? We made it. The self-supporting cones we put in every firing verify it, time after time, for thousands of firings. Only fine-tuning is needed to adjust the top temperature if a cone so indicates. This happens as elements degrade or when they are replaced. Should you use that red line? No. Use self-supporting cones to establish your target temperatures and make your own line.

Pages that reference this post in the Digitalfire Reference Library:

SHAB Shrinkage/Absorption Test, At what point is a self-supporting cone bent to the correct degree?, Cones bending badly, cones bending goodly, Old-style hobby kilns with a sitter are usable if you become "the controller"!, Cones bending theoretically, cones bending actually, Pyrometric Cone

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.