Introduction
This page documents ongoing attempts to produce a rich, variegated green glaze using an iron/phosphorus mechanism in cone 6 borosilicate glaze.
Some key takeaways so far:
- A lithium-rich base produces a better green than a soda or potash base
- A small addition of lanthanum oxide appears to brighten the effect without changing the color
Iron/Phosphorus Glaze
Blue Hare, Hare’s Fur, or Floating Blue is a widely used effect in pottery studio glazes and commercial glazes.
Glaze Material Substitutions
This page provides a set of calculators to help with calculating common material substitutions in glaze recipes.
Warning: These calculators are based on theoretical UMF analysis of the materials, and I have not verified them experimentally. Oxide analysis isn’t the only factor that determines how a material will behave in a glaze.
Each calculator allows for conversions between two material forms. Click “Switch” to toggle the conversion direction. Red cells indicate that a material should be subtracted from the recipe.
