Craft · 6 pages · 12 min
How a glaze melts into glass
Silica, fluxes, and alumina melt in the kiln and freeze into a glassy coat.
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From the opening
A glaze is a coat of mineral ingredients that melts in the kiln into a viscous glass and then freezes onto the pot as the kiln cools. Silica forms the glass, fluxes lower the temperature where that glass can melt, and alumina keeps the melt from running off the wall like water. The opening covers silica forms the glass, fluxes let the coat melt, and alumina keeps it from running.
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Inside
- Silica forms the glass
- Fluxes let the coat melt
- Alumina keeps it from running
- The raw coat is still powder
- Where the idea stops applying
- A distinction worth keeping
Sources
- Silica as the glass former in glazes
- Fluxes and alumina in glaze melt