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33 Cards in this Set
- Front
- Back
BAT or BATT |
Ridged flat disk of wood, plastic or plaster placed on the wheelhead. When finished throwing your items the BAT is just removed off the wheelhead to prevent damage to the piece. |
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BISQUE FIRE |
A preliminary firing of unglazed ware fired between 1200 and 1940 degrees fahrenheit. The firing prepares the ware for glaze by chemically removing all the water from the clay. Usually fired at either cone 06-04. |
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BISQUE WARE |
Pieces that have gone the the initial bisque fire. Ware emerges for the bisque kilm with all traces of water fired off and their particles only partially fused. This partial fusion allows porousness for glaze application. |
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BURNISHING |
the polishing of the surface of clay by rubbing with a polished stone, hand, plastic ect. burnish may be loss if fired above cone 06. |
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CALIPERS |
adjustable tool for measuring inside/outside diameters as in making lids. |
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CENTERING |
Critical step in throwing, the clay is formed into a symmetrical cone before making the hole for the pot. |
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CHINA PAINT, LUSTER |
Overgrazes applied after a work is glazed and then fired to a low temperature(cone 017-023). Luster are metallics ie. gold, silver, mother of pearl ect. |
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CLAY |
earthy mixtures created by erosion. When moist they can take on any shape and when fired become extremely durable and permanent/ There are five types of clay; Ball clay, Stoneware, Kaolin, Earthware, and Fire clays. |
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CLAY BODY |
a combination of one or more plays and non-clay ingredients formulated to serve a specific purpose. Earthen Ware; refers to low fire clay such as terra cotta or white talc clay. lot fire between 1600-1900 Degrees fahrenheit. Stoneware;a clay body that is sense, impermeable and hard enough to resist scratching with a steel point. Both mid and high fire are workable, strong, dense and reliable. Fired between 1920-2100 degrees fahrenheit. Porcelain; a various white wear of more or less translucency fired to cone 10 or higher. |
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CONE |
Made out of ceramics materials formulated to bend at certain temperatures. 022 1112 F Dull Red China Paint,ceramic decals, Terra Sigillata 04 1940 F Low fire Bisque Glaze 06 2232 F Mid Range Stoneware Glaze. 010 2381 F White Hire Fire Stoneware/Porcelain |
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FETTLING KNIFE |
Long tapered knife useful for trimming cast or pressing pieces, and for separating mold componets. |
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FRIT |
Made of ceramic materials and added to glaze to help them flux(melt) |
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GLAZE |
A ceramic glaze is essentially glass with additions of color and other ceramic materials. It differs from glass in that it expands less and contains more alumina. All glazes start as a mixture of oxides and minerals in water. |
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GLAZE FIREING |
the second fire of a bisque piece that has had glaze applied to the surface. The glaze firing can be anywhere from 1074 to 2595 degrees fahrenheit. |
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GROG |
Clay that has been fired and then ground up. Grog can come in many particle sizes from fine to corse. Its used to reduce the shrinkage in clay bodies, add a gritty, rustic texture called "tooth" and aids even drying. This prevents defects such as cracking, crow feet patterning and lamination. |
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GREENWARE |
Unfired pottery, the three stages of wetness for greenware are classified as wet, leather hard and bone dry. we try not to bisque fire until they are bone dry. |
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KILN |
A heating chamber usually made of firebrick or ceramic fiber for hardening and maturing clay and glazes. Fuels that usually power kilns are electricity, glass or wood. |
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KILN FURNITURE |
consists of implements (shelves, posts, stilts) stacked to make full use of a kiln's capacity. |
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MAJOLICA |
Majolica is a kind of glaze on glaze painting. the ware is first covered with a base of opaque white majolica glaze which forms the background for decoration. Over this coating is applied color pigments mixed with frit. When the pieces are fired, the decoration melts into and fuses with the background glaze. |
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OXIDES/STAIN WASHES |
Oxides or stains added to water to create a flat surface wash for painting or covering a surface. |
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MICA |
A shiny silicate mineral with a layered structure, found as minute scales in granite and other rocks, or as crystals. Ground mica is used in what is called micaeous clay giving a glittery quality to the surface. |
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POTTERY |
name the parts of the pot |
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RAKU |
Pottery technique origination in the 16th century Japan probably by koran potter. When Raku fire in the US, pots are pulled out of a kiln hot read and put into sawdust or other combustible materials to mother the oxygen and create a carbon rich atmosphere. |
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RIB |
Wide, flat handheld tool used to shape, smooth and or scrape clay surfaces; usually wood,rubber,plastic or metal, either rigid or flexible, with straight, curved or profiled edge. |
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SGRAFFITO |
decoration win which slip or other coating is scratched or cut away to reveal the clay body underneath. |
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SLIP |
slip is a catch all term referring to any clay suspended in water. This could mean clay and water mixture that we use like "glue" to attach any two pieces of clay or to a clay water and colorant mixture used to decorate leather-hard to dry ware. |
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SLIP CASTING |
the creation of ceramic forms by casting slip in plaster molds. |
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TERRA SIGILLATA |
Known as the first form of glaze but its actually a type of engobe or slip. Terra sigillata is made by separating the finer particles of a common clay and its spread on the ware in a thin cat and fired at a low temperature (cone 17). Its applied by dipping, painting or spraying dry ware that has been spritzed with water immediately prior to application. |
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THROW |
To make a pot on the potter's wheel. |
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TRIMMING |
at the leather-hard stage, removal of access clay from a piece, using a variety of sharp cutting tools. Often used by turning a pot upside-down on the wheel at leather-hard stage and trimming a round "foot" in the bottom. |
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UNDERGLAZE |
refers to commercially made colorant, clay and water and may be applied to bone dry, leather hard, or bisque ware. Most formulas contain oxide and a frit which helps them adhere to the clay. |
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UNDER GLAZE PENCIL |
underglaze pigments in pencil form, good for making wares and test tiles. and for "pencil drawn" decorative affects. |
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WEDGING |
Process of kneading or cutting and throwing the clay whith hands to remove air bubbles and ensure and air free form. |