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reduce

Posted On May 29, 2009 0 Comments
To induce reduction. Source: Clay: A Studio Handbook

red-figure style

Posted On May 29, 2009 0 Comments
In ancient Greek ceramics, Classical stage of vase painting, featuring figures in red against black background, with highlights painted in black and white. Source: Clay: A Studio Handbook

Redart

Posted On May 29, 2009 0 Comments
Brick-red earthenware clay, produced by Cedar Heights Clay Company. Source: Clay: A Studio Handbook

red lead; lead oxide

Posted On May 29, 2009 0 Comments
Pb3O4—Former source of lead for glazes. Highly toxic in absorption, inhalation, and ingestion. Remove from studio and dispose of in a responsible fashion. Source: Clay: A Studio Handbook

recrystallization

Posted On May 29, 2009 0 Comments
During initial cooling, the formation of microcrystalline or macrocrystalline structure in the glaze surface. Source: Clay: A Studio Handbook

raw glazing; green glazing

Posted On May 29, 2009 0 Comments
  Glazing leather-hard or bone-dry wares for single-firing.   Source: Clay: A Studio Handbook

ramp

Posted On May 29, 2009 0 Comments
Profile of the firing of a kiln, including speed, duration, soaking periods, etc. of both the heating and cooling cycle, as in firing ramp and cooling ramp. Source: Clay: A Studio Handbook

raku (western)

Posted On May 29, 2009 0 Comments
Inspired by traditional Japanese raku firing, Western (typically referred to as American) raku is a relatively low-temperature firing process using clay that is either under fired or otherwise formulated to withstand the thermal shock of being removed from a kiln at top temperature. Work is removed from the kiln at bright red heat and subjected… Read More »

raku (japanese)

Posted On May 29, 2009 0 Comments

Traditional raku or Japanese raku is a low-fired glazed pottery by a direct process that involved putting the pots into and removing them from a red-hot kiln. The potter Chojiro is credited with being the first to produce raku ware in 1580. The term raku is translated as “enjoyment” or “ease.” From The Potters Dictionary of Materials and Techniques, by Frank and Janet Hamer. See raku (Western).

extruder, extrude, extruding

Posted On December 5, 2008 0 Comments
Machine that forces plastic clay through a die to produce extruded clay shapes. Source: Clay: A Studio Handbook