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What is raku?
About Mark Wong
Recipes
Clay Recipes

Raku Clay: Bodies | Glazes
(mixed by volume)

Basic Raku Throwing Body
Hawthorne Bond Fire Clay4
OM-4 Ball Clay4
E.P.K.4
Silicia Sand (30 or 60 Mesh)2
Talc1
 
Slab Construction & V.o.U.S.
(Vessels of Unusual Size)
Hawthorne Bond Fire Clay4
OM-4 Ball Clay4
E.P.K.4
Silicia Sand (30 or 60 Mesh)2
Talc1
 

When preparing a clay for raku firings, it is important to take into account the process the artist will be using to create the work. A balance must be struck between plasticity and thermal shock resistance. The more Kyanite one adds the less plastic the clay but also less cracking in the raku firing. In addition, Kyanite is extremely refractory. Therefore, as the percentage goes up, the percentage of flux must be raised as well ( or the bisque temperature, but its always easier to fit the clay around a given temperature than to have fire multiple loads to account for differing clays). Some clay artists use as much as twenty-five to fifty percent Kyanite in their clays. The resulting bodies are extremely short, but since they are specializing in large thick slab constructs, it suits their needs.

The V.o.U.S.'s are vessels thrown in multiple sections, twenty-four to forty-eight inches tall. A certain amount of plasticity must be retained to form such sections. However, finished pieces of such dimensions must have a little more thermal strength than is afforded by the first recipe. The second recipe gives the balance needed to create such delicate monstrosities.

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Luster Light Reduction Wall Platter
Luster Light Reduction Wall Platter
$180.00