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Glazing

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by

Jessica Stuver

on 17 September 2014

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Transcript of Glazing

Glazing
Glazes
ceramic glazes are made up of materials that, when they fuse during the firing process, form a vitreous layer that adheres to the clay surface

to make glazes, you need silica, flux, and refractory material
silica
the element that converts raw pottery into a glass-like state
flux
the material that makes the glaze fuse with the clay
refractory material
this hardens and stabilizes the glaze
Glazing methods
glazes can be dipped, poured, sprayed, or brushed onto ceramic pieces

brushing glazes is best for novice potters and also allows for more precision
Colors
the glazes undergo a chemical reaction when they are fired in the kiln, so in addition to surface texture, the glazes change colors as well

do not choose colors by how they appear in the container; use the test tiles to check color appearance
Brushing glazes
glazing is very different from painting; brush slowly, allowing the bisque-fired clay to absorb the glaze

apply the glaze evenly, and try to keep it from dripping or running

you will need 2-3 coats of glaze in order to get full coverage; allow the coats to dry in between
Glaze Fire
a ceramic piece must be refired after it has been glazed in order to bond the glaze to the ceramic surface
Full transcript