Analysis

Recipe Properties

Co-Efficient of Expansion is a measurement of a pottery materials degree of expansion when heated and contraction when cooled during a kiln firing. Altering this value can help achieve a desired glaze fit. Glaze fit is the difference in degree of contraction between a pottery glaze and a pottery clay body. A high value may indicate a tendancy to craze while a low value could indicate a tendancy to shiver.

0 is a low value and could indicate too much compression with the possibility of shivering.

The material with the highest Expansion value in this recipe is: .

The material with the lowest Expansion value in this recipe is: .

For further assistance adjusting Co-Efficient of Expansion click on Adjustment Wizard

Ratio can indicate the relative gloss or matt finish of a pottery glaze. Ratio is a measure of the proportion of Silica to Alumina in a glaze recipe. Typically a pottery glaze with a high ratio will be glossy, while a low ratio could indicate a matt or semi matt finish. Slow cooling of a pottery glaze can cause crystal formation which will also result in a matt finish, even though the ratio value indicates a gloss finish.

is a low value indicating a less shiny surface.