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Raku Glazes (lead-free) mid-fire between 850 – 1050°C
Raku is an old Japanese burning-technique (ca. 15th century) in which the ceramic is taken out of the kiln while it is still gleeding and then chilled. American ceramic artists added a later after-reduction to the Raku-technique in the 60s. The burning (850-1050°C) can last up to one hour. As soon as the glaze is melted out and shiny the pieces are taken out of the kiln with long pliers and substituted with new ones. Quick chilling and sprinkling with water causes zones with small Craquelées, reduction (smoking) causes changes in colour and lustre-effects. Sawdust, wood fibres, gras, leaves or straw act as reduction-means in different ways. The smoking is usually finished by chilling the piece in cold water in order to fix the result.