Kansas Clay - Cone 06-04 Earthenware Red

A low fire red clay that fires to a light red-orange color at cone 06 to 05, and a richer, deeper red color when fired hotter, up to about a cone 2.

During the summer of 2020, Kansas Clay completed a comprehensive test of their clay bodies.  For each clay body, they tested 6 flat bars, which were rolled out on a slabroller.  They ALSO tested vertical shrinkage of a thrown cylinder (6 sections, each with their own test).

Testing Methodology

• Beginning weights in grams were recorded
  
• Lines and weights were measured & recorded when bone dry
• The samples were fired to Cone 04
• Lines and weights were measured & recorded again
• The flat tiles were then soaked in hot water for 1 1/2 hours, then weighed again
• Math magic was then done to calculate the average shrinkage wet-dry and average shrinkage overall for both flat and thrown tests, and the average water absorption was calculated based on the flat bars.
• We also figured the "LOI" (Loss on Ignition) by computing the fired weight against the bone dry weight.  This tells us what percent of organics burn off in the firing.