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body reduction

Posted On December 5, 2008 0 Comments
Period of reduction atmosphere induced between cone 012 and 08 to bring out iron color and speckles in claybody, especially in high-fired stoneware. Source: Clay: A Studio Handbook

blunger

Posted On December 5, 2008 0 Comments
A motorized impeller-mixer used in preparing casting slip. 

blunge

Posted On December 5, 2008 0 Comments
The process of mixing a glaze or slip with a motorized impeller-mixer. Source: Clay: A Studio Handbook

blow-off; flame-off

Posted On December 5, 2008 0 Comments
In burners, when speed of air/fuel mixture exiting tip of burner is greater than combustion rate—flame jumps off tip of burner and often blows out. Source: Clay: A Studio Handbook

bloating

Posted On December 5, 2008 0 Comments
Firing defect where blisters form within claybody, raising large lumps on the surface. 

blistering

Posted On December 5, 2008 0 Comments
Glaze defect where fired glaze surface contains bubbles, which often break open to leave sharp-edged craters in surface. 

blackware firing

Posted On December 5, 2008 0 Comments
Bonfire firing that is smothered with manure and/or sawdust at maximum temperature and then buried in sand, dirt, or ash, to trap smoke, causing wares to turn black. Source: Clay: A Studio Handbook

black-figure style

Posted On December 5, 2008 0 Comments
In ancient Greek ceramics, late Archaic and early Classical style in which figure first dominates, and where figures are in black against a red background. Source: Clay: A Studio Handbook

blackbird; barnard

Posted On December 5, 2008 0 Comments
Slip clay with very high iron content, often used as brown colorant for claybodies. Source: Clay: A Studio Handbook

bisque-firing

Posted On December 5, 2008 0 Comments
Initial kiln firing in which clay sinters without vitrifying, and though very porous, will no longer soften in water. Source: Clay: A Studio Handbook