Raku Clay Bodies

Almost any clay will work. A natural, locally found earthenware or stoneware clay (gumbo!) can be made shock resistant and workable by opening it up with sufficient additions of; fireclay and sand or grog. Probably the most important factor in the success of a raku clay body is the addition of the fore-mentioned materials. Addition of these materials produces the porous properties needed for rapid even drying of the greenware, as well as the rapid contraction of the ceramic object after the firing and during the cooling and reduction phase. Following is a group of raku clay bodies given in parts by weight.

CAUTION!!! USE DUST MASKS WHEN HANDLING DRY COMPOUNDS AND OXIDES. FIRE OUTSIDE WITH GOOD AIR CIRCULATION AND BEWARE OF FUMES DURING FIRING.
White Raku

Missouri fireclay

Cedar Heights Goldart

Tennessee #5 ball clay

Sodumene

Grog (fine mesh)

 

25

30

15

5

20

White Raku

Plastic fireclay

Talc

Sand (30 mesh)

 

50

20

30

Buff Raku

PBX fireclay

Jordan clay

Ball clay

Cedar Heights Goldart

Grog

 

30

15

25

15

15

White Raku

North American fireclay

Cedar Heights Goldart

Grog (28 mesh)

 

50

50

30