Glaze Course - Lesson Summaries
Focus on Flux Oxides - Flux Blends Part 1
Lesson Number 28
Throughout this course to date we have emphasised the important basic theoretical structure of a glaze melt in which flux oxides interact with oxides that form glass when melted and oxides that stretch or prolong the process called stabilisers.

Much of our attention has been focused on levels of silica and alumina in the glaze. The unity formula is a form of analysis which gives us a picture of a glaze melt in terms of the proportional relationship between a single theoretical molecule of flux and molecules of Al2O3 and SiO2. The unity formula allows us to assess possible melt qualities by looking at the levels on SiO2 and Al2O3 in the unity formula in relation to the proposed firing temperature for the glaze.

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Contact: Lawrence Ewing - 1015 Ellis Rd, Five Rivers, RD3, Lumsden, Northern Southland,
New Zealand