Recipes for Porcelain Clay Bodies

Here are a few recipes for porcelain clay bodies (casting, throwing, and sculpture).  Test them before you use them!

CASTING

Cone 10
NDSU’s porcelain casting slip:
EPK 46
Silica 34.2
Custer 19.8
*deflocculate with a combination of sodium silicate, Darvan #7, and soda ashCone 6-10
 
Kitty’s porcelain casting slip:
Kaolin 42
Custer 36
Silica 22
Water 34
*Darvan #7 to deflocculateCone 8-9
 
Porcelain casting body
Flint 20
Feldspar 36
Kaolin 30
Ball clay 14Cone 6-8
 
White/Off White Porcelain casting body
Bone ash 35.7
Kaolin 29.3
Silica 21
Potash 14
Sodium carbonate 0.3%
Notes: shrinkage 12.5%Cone 6-9
 
Porcelain casting body
Soda feldspar 44
Georgia kaolin 33
Silica 18
Whiting 5
Sodium carbonate 0.4%
Notes: shrinkage 10%
 
THROWING
 
Porcelain (throwing, handbuilding, non-translucent, plastic)
Grolleg 55
Custer 18
Flint 16
EPK 9
Pyrax 2
Bentonite 2
Molochite, 200 mesh or finer, 3 

Reeve’s Porcelain (throwing, translucent)
Grolleg 40
Custer 34
Flint 26
Macaloid 4
*I haven’t used this in a while, but I seem to remember its being very short.

 

Alfred’s Porcelain (throwing, translucent)
Grolleg 50
Kona F-4 30
Flint 20

 

Cone 9
Porcelain body
Grolleg 50
Potash feldspar 25
Flint 25

 

Cone 9-10
Porcelain body
Potash 27
Grolleg 45
Bentonite 6
Flint 26

 

Cone 9 (Tom Turner)
6 Tile 75
Kaopaque-20 38
Kona F-4 60
Silica (200 mesh) 60
OM4 12
V gum T 4
Ceramictalc 10AC 4

 

Cone 8-12
Porcelain body
Ball clay 27
Kaolin 27
Potash 27
Flint 19

 

Cone 10-15
Porcelain body
Ball clay 25
Kaolin 25
Potash 25
Flint 25

 

Cone 6
White-gray porcelain throwing body
Georgia kaolin 40
Potash 25
OM4 10
Tenn #1 6.5
Silica 13.5
EPK 5
Bentonite 2
Notes: shrinkage 14%

 

Cone 8-11
White-gray porcelain throwing body
EPK 40
Potash 25
Silica 25
OM4 7
Bentonite 3
Notes: shrinkage 15%

Cone 10
White/Off-white porcelain throwing body
Kaolin 30
OM4 14.5
Tenn #1 12.5
Potash 20.5
Silica 20
Bentonite 2.5

BONE CHINA

Bone China (unknown firing temperature)
Grolleg 30
Cornwall Stone 20
Bone Ash 40
Flint 10
Macaloid 2
*This is extremely short.

SCULPTURE

Cone 6-8
White/Off white porcelain sculpture body
OM4 32
Tenn #5 32
Fine white grog 12
EPK 11
Fine white sand 8.2
Potash feldspar 2.4
Silica 2.4
Notes: shrinkage 13.5%

Cone 9-10
White/gray porcelain sculpture body
Kaolin 21
Silica 23
Tenn #5 18
Potash feldspar 18
White grog (60-80 mesh) 10
Fine silica sand 10
Notes: shrinkage 11.5%

 

These recipes are provided in faith that those who try them will perform proper tests before usage. The author of this blog is not responsible in any way for failed clay bodies, glazes, slips, or anything else, regardless of where fault may lie. Sources for recipes include Glenn C. Nelson and James Chappell.

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6 comments on “Recipes for Porcelain Clay Bodies

  1. Anonymous says:

    with what can i substitute the bone ash, in the recipe of the bone china?

  2. Robvrig@yahoo.com says:

    About the porcelain Cone 6-8 White/Off white porcelain sculpture body recipe.
    There is Fine white grog and Fine white sand
    Where can I get these and if I look what specs are best.
    Thank you

  3. amyuthus says:

    I haven’t actually used this recipe before, but if I were going to, as the grog I would use molochite (120 or 200 mesh, the higher the number, the finer the particle). For the sand, I would probably use a fine silica sand. Both are readily available from ceramic supply stores. I did a quick search and found both of them on Axner. Most stores usually list them under grogs.

  4. vcarb010 says:

    At what cone does the Alfred’s Porcelain recipe need to be fire to?

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