A porcelain fires blue-white because of added stain Color intensity develops more as maturity increases

Friday 2nd December 2016

These insight-live.com/glossary/293">Zero3 fritware bars are fired at cone 06, 04, 03 and 02 oxidation (bottom to top). This body has very low TiO2 and Fe2O3 levels. But the secret is the 0.2% blue stain (Mason 6336) it contains. Notice that almost no color develops at the lowest temperature, cone 06. But, as soon as glass development begins, by cone 04, so does the color.

This strategy is typically only suitable if a high-energy mixer is available. As a potter, blender mixing is thus essential to break up the stain agglomerates, otherwise tiny blue specks will appear. That mixing also separates the Veegum particles to get higher plasticity. The stain used here is Mason 6336. But this one may not work for you, just do testing to find the right one, at the right percentage.

Pages that reference this post in the Digitalfire Reference Library:

L3924C - Zero3 Porcelain Experimental, Cone 10R porcelain (left) vs cone 03 porcelain (right), Knapping Zero4 porcelain, Porcelain

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.