#1 Cone 6 Porcelain

15   6 Tile Kaolin

15   C&C ball clay

20  Grolleg Kaolin

20  Silica 325 mesh

15   G-200 feldspar

5    Talc

5    Frit 3195

5    Wollastonite

2    Bentonite (added)

Adsorption:  0%

Shrinkage:  12.5%

Slumping:  moderate

Translucency:  medium

#2 Cone 6 Porcelain

50   Grolleg Kaolin

20   Silica 325 mesh

17    G-200 feldspar

3     Talc

3     Frit 3195

5     Wollastonite

2     Veegum T

Adsorption:  0%

Shrinkage:  12.5%

Slumping:  moderate

Translucency:  High

The first clay body was developed to be as plastic and affordable as possible, while maintaining a decent degree of translucency.

The second is the most translucent, but has a higher cost. If you want an even greater degree of whiteness and translucency, New Zealand Halloysite (aka kaolin) can be substituted for some or all of the Grolleg.

I definitely recommend doing small test batches to see if these recipes will work for you, they may need to be adjusted.

Notes on materials:

G-200 feldspar: I developed this recipe over a decade ago, so it is the old G-200. If using G-200HP or other feldspar, modifications will be necessary.

Bentonite:  Western 325 mesh

Wollastonite:  Needs to be sieved, or you will have lumps in your clay, I use 60 mesh.

Veegum T or macaloid:  Always add it to the water first, I find it necessary to slowly sift it into the water.

Mixing:

I mix these clays into a slip to get everything evenly distributed, and soaked well.

I add all of the fluxes to the water first (unless using veegum), mixing well to disperse them, a small amount of clay from the recipe can be used to help prevent settling if necessary. Then add clays, the bentonite is dry mixed with another clay before adding.

I hope this helps those interested in cone six porcelains, and those who enjoy experimenting.