Bowen Studios
Cone 10 Clay and Glaze Recipes
Zam Super Clay (Modified)

Hawthorne Bond fireclay 40 mesh 15 lbs.
Lincoln fireclay 60 mesh 10
Goldart stoneware clay 40
OM4 ballclay 15
Flint 200 mesh 10
Custer feldspar 7
Redart clay 6
Grog 20x50 mulcoa 8
Grog 48 mulcoa 8




All measurements in grams

Matte Glaze

Nepheline Syenite A270 15.06
Minspar 35.6
Whiting 11.68
Barium 10.71
EPK 8.27
Silica 11.57
Rutile 7.17

Orange variation
Red iron oxide 4
Pale green variation
Copper carbonate 1
Tin oxide 4



Warren’s Tenmoku

Whiting 16
Custer feldspar 44
EPK 10
Silica 22

Red iron oxide 9



Amber Celadon

Custer feldspar 30
Whiting 25
Silica 25
OM4 10
Gerstley Borate 3
Yellow iron oxide 7



Yellow Salt

Nepheline syenite 63.9
Dolomite 21.1
Zircopax 16
OM4 4.3

Red iron oxide 1



Emily’s Purple

Custer feldspar 41
Gerstley Borate 12
Dolomite 7
Talc 15
OM4 5
Silica 20

Cobalt oxide 2
Tin oxide 2



D-16 (semi-matte, opaque)

Custer feldspar 40
Frit 3124 9
Talc 9
Whiting 16
OM4 10
Silica 16

Add 10% of any commercial stain



Rexrode Yellow

Custer feldspar 16.7
Nepheline syenite 25
Silica 5.6
EPK 9.7
Barium 25
Dolomite 18

Zircopax 6.7
Red iron oxide 4.2



Reitz Green

Nepheline syenite 70
Petalite 15
Whiting 5
OM4 8
Gerstley Borate 2

Rutile 2
Cobalt carbonate 1



Ball Celadon

Custer feldspar 24.3
Whiting 19.2
EPK 16.6
Silica 36.9
Barium carbonate 2
Tin oxide 1



Bronze (for decoration over glazes)

Manganese dioxide 45
Copper carbonate 35
EPK 20