Raku Technique

Raku Technique

Raku is a Japanese inspired method for firing clay that creates unpredictable smoke patterns and spectacular metallic and crackle effects in the glazes. After initially firing your clay piece (greenware) in an electric kiln, you fire it (bisque) a second time in a gas kiln. When the temperature of the piece reaches between 1600 and 1800 degrees, you place it in a nest of combustible materials (leaves, sawdust and pine needles), cover the item with a metal container, and wait about 15 to 20 minutes. Then remove the piece and dip it in water. (from www.artshow.com/interviews/giddens/ )
The newly fired piece is taken from the kiln and set on a bed of shredded newspaper, creating a large fire!
Stephanie places a trash can over the fire to reduce the oxygen around the piece. This process is called "reduction". Reduction, along with the smoke from the burning paper causes the different metallic flares and smokey accents on each piece.
After a period of about 20-30 minutes "in the can", the piece is removed and cooled further by dipping in water, or by sitting in the open air. Once cool, the piece is thoroughly cleaned to remove any soot.
The finished self-portrait.