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- 3. Unglazed clay, fired once at a low temperature.
- 5. A slip of colored clay that usually requires a glaze on top.
- 8. A slab or platform on which clay is handled; a circular device attached to the wheel-head.
- 9. A decomposed granite-type rock. To be classified as clay the decomposed rock must have fine particles so that it will be plastic (see definition below). Clays contain impurities which affect color and firing temperatures.
- 10. To bake in a kiln. Firing is a term used for “cooking” the clay.
- 11. Enclosed containers of various sizes- built of refractor brick and heated by electricity, gas, oil, or wood to temperatures from 1500 F. to 2340 F. in which ceramic ware is fired. Also called the “oven” for firing the clay.
- 14. Refers to clay which is ready to be fired. All the moisture is gone from the clay. Clay is VERY FRAGILE at this stage.
- 15. The transformation of a substance into glass.
- 17. The process of firing unglazed clay to a low temperature to harden the clay and drive the physical water from it. The approximate temperature of this firing is 1815 F.
- 18. Quality of clay that allows it to be manipulated and still maintain its shape without cracking or sagging.
- 20. Roughing up of the surface of clay for joining.
- 22. A brownish-orange earthenware clay body commonly used for ceramic sculpture.
- 23. A liquid form of clay used as a glue or as decoration.
- 24. A glassy coating that has been melted onto a ceramic surface. It is used to decorate the piece and to seal the clay surfaces.
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- 1. Rope like pieces of clay.
- 2. A high-fire clay. Stoneware is waterproof even without glaze; the resulting ware is sturdier than earthenware.
- 4. One of the oldest craft techniques in which objects are constructed entirely by hand.
- 6. A low-fire clay. It is porous and not waterproof. To be functional, It must be glazed.
- 7. - True porcelain was being made in China and Korea around 960 AD. PORCELAIN A pure white clay. A unique aspect of _________________ is that it can be worked as clay, but when fired properly reaches a state similar to glass. Primary qualities of _________________ are translucency and whiteness.
- 12. The art of making things of clay. Clay is an ancient tradition.
- 13. A mixture of minerals made in the shape of an elongated pyramid, formulated to melt at a given temperature and rate of firing.
- 16. Refers to clay that is dry enough but still damp enough to be joined to other pieces or carved without distortion. Clay at this state resembles leather. Hard to bend and soft enough to be carved.
- 19. Unfired pottery that is bone-dry, a state in which clay forms are the most fragile.
- 20. Clay which has been made flat by rolling.
- 21. Much hotter than a bisque fire. Firing to temperature at which glaze melts to form a glasslike surface.