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The glaze firing times for raku ware are short: an hour or two as opposed to up to 16 hours for high-temperature cone 10 stoneware firings. This is due to several factors: raku glazes mature at a much lower temperature (under 980 °C or 1,800 °F, as opposed to almost 1,260 °C or 2,300 °F for high-fire stoneware); kiln temperatures can be ...
Pages in category "Ceramic glazes" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. A. Ash glaze; C. Celadon;
The glaze is not applied with a brush but with a pouring or ladling technique, resulting in a freely-applied look and feel. The distinct green color is a result of the copper-sulfate glaze, combined with oxidation firing. Common motifs include scenes from nature, such as flowers, rivers, and plants.
Ceramic industries are reluctant to use lead alternatives since leaded glazes provide products with a brilliant shine and smooth surface. The United States Environmental Protection Agency has experimented with a dual glaze, barium alternative to lead, but they were unsuccessful in achieving the same optical effect as leaded glazes.
Thus a potter might prepare, or order from a supplier, such an amount of earthenware body, stoneware body or porcelain body. Coiling A hand method of forming pottery by building up the walls with coils of rope-like rolls of clay. Cone See pyrometric cone Crackle glaze A glaze intentionally crazed (minute cracks) for decorative effect. Crawling
A light, transparent, or almost glass-like glaze with a bluish-green tint also appears on some Shigaraki wares. The glazes were dribbled, sprayed or spattered over the ceramic surface. Unless allowed to gather in small pools, the glaze appears near invisible in most lighting, only becoming visible when the piece is held and turned in the hand.
Underglaze is a method of decorating pottery in which painted decoration is applied to the surface before it is covered with a transparent ceramic glaze and fired in a kiln. Because the glaze subsequently covers it, such decoration is completely durable, and it also allows the production of pottery with a surface that has a uniform sheen.
Overglaze decoration, overglaze enamelling, or on-glaze decoration, is a method of decorating pottery, most often porcelain, where the coloured decoration is applied on top of the already fired and glazed surface, and then fixed in a second firing at a relatively low temperature, often in a muffle kiln. It is often described as producing ...
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