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charging

Posted On December 5, 2008 0 Comments
Inserting or injecting a charge of chemical material into a kiln during vapor-glazing processes. Source: Clay: A Studio Handbook

charge

Posted On December 5, 2008 0 Comments
A quantity of chemical material, usually salt or soda, which is inserted or injected into a hot kiln during vapor-glazing processes. Source: Clay: A Studio Handbook

chamois

Posted On December 5, 2008 0 Comments
Very soft, pliable animal skin—when wet works well to smooth wet clay surfaces. Source: Clay: A Studio Handbook

chalk; whiting; calcium carbonate; limestone; marble

Posted On December 5, 2008 0 Comments
CaCO3—alkaline earth, contributing calcium oxide to glaze—powerful AT flux—major HT flux for glazes—gives strong durable glass. Sometimes used in low-fire claybodies to extend firing range and give greater fired strength. Source: Clay: A Studio Handbook

ceramic fiber

Posted On December 5, 2008 0 Comments
Ceramic insulating material composed of spun kaolin fibers—available in blanket form, braided tape, rigid board, and tubular flue liners. Highest insulating rating of standard refractories, but can release carcinogenic fibers. Source: Clay: A Studio Handbook

centering

Posted On December 5, 2008 0 Comments
Critical step in throwing, occurring during and after wheel wedging, whereby the clay mass is formed into a symmetrical lump before penetrating and raising walls. Source: Clay: A Studio Handbook

celadon

Posted On December 5, 2008 0 Comments
Classic East Asian transparent or translucent glaze with small percentages of iron and/or copper and/or chrome, giving range of soft greens, blue-greens, and gray-greens. Most desirable Chinese celadons often contain minute air-bubble inclusions, giving slight opalescence. Source: Clay: A Studio Handbook

catenary arch

Posted On December 5, 2008 0 Comments
A parabolic kiln arch requiring no buttressing or steel frame; laid out by hanging a chain from two points and marking the resulting curve. Source: Clay: A Studio Handbook

castable

Posted On December 5, 2008 0 Comments
Short for castable refractory—a refractory mix that can be cast into molds to form kiln parts. Source: Clay: A Studio Handbook

carpal tunnel syndrome (CTS)

Posted On December 5, 2008 0 Comments
Serious affliction of the wrist resulting from excessive and/or stressful repetitive-motion activity such as hand wedging clay. Source: Clay: A Studio Handbook