What does it take to get a crystal-clear low fire transparent? A lot!

Thursday 30th October 2014

These three cups are glazed with G1916S at cone 03. The glaze is the most crystal clear achieved so far because it contains almost no gas producing materials (not even raw insight-live.com/material/925">kaolin). It contains Ferro frits 3195 and 3110 plus 11 calcined kaolin and 3 VeeGum. Left is a low fire stoneware (L3685T), center is Plainsman L212 and right a vitreous terra cotta (L3724F). It is almost crystal clear, it has few bubbles compared to the kaolin-suspended version. These all survived a 300F/icewater IWCT test without crazing!

Pages that reference this post in the Digitalfire Reference Library:

Calcined Kaolin, G1916Q - Low Fire Highly-Expansion-Adjustable Transparent, L3685U - Cone 03 White Engobe Recipe, L3724F - Cone 03 Terra Cotta Stoneware, Glaze Bubbles

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.