Alisa Liskin Clausen on sun 8 sep 02
Glaze test for Matte White, cone 6 redux, fired to cone 6 ox.
Glaze tested on white midrange stoneware fired in electric oxidation to =
1220c.
Source: Clayart
Credited to:
Firing ramp:
100c p/h to 600c (212f - 1112f)
150c p/h to 1100c (330f - 2012f)=20
100c p/h to 1220c (212f - 2228f)
cool down max. per hour to 1100c=20
cool 80c per hour to 800c
shut off kiln
Recipe:
38.7 Neph. Sye.
15.2 Wollastonite
15.2 Barium Carb.
10.5 Silica
10.2 EPK
10.2 Gerstley Borate
Note: All raw materials are measured up or down to the nearest whole =
decimal. =20
Colorants or additives to a 100 gram test batch are measured in percent =
to the 100 gram test batch.
Substitutions:
Borax frit for Gerstley Borate
Results:
White matte, covering glaze. Slightly dry, very matte, can mark with =
spoon scrapping.
Regards from Alisa in Denmark
Ron Roy on thu 12 sep 02
Expansion high - it's going to graze - and settle out like a rock for most
- It may be stable but you will have to test - subbing 11 Strontium for the
15.2 Barium gives the same glaze.
RR
>Glaze test for Matte White, cone 6 redux, fired to cone 6 ox.
>
>Glaze tested on white midrange stoneware fired in electric oxidation to 1220c.
>
>Source: Clayart
>Credited to:
>
>Firing ramp:
>100c p/h to 600c (212f - 1112f)
>150c p/h to 1100c (330f - 2012f)
>100c p/h to 1220c (212f - 2228f)
>cool down max. per hour to 1100c
>cool 80c per hour to 800c
>shut off kiln
>
>Recipe:
>38.7 Neph. Sye.
>15.2 Wollastonite
>15.2 Barium Carb.
>10.5 Silica
>10.2 EPK
>10.2 Gerstley Borate
>
>Note: All raw materials are measured up or down to the nearest whole
>decimal.
>Colorants or additives to a 100 gram test batch are measured in percent to
>the 100 gram test batch.
>
>Substitutions:
>Borax frit for Gerstley Borate
>
>Results:
>White matte, covering glaze. Slightly dry, very matte, can mark with
>spoon scrapping.
>
>Regards from Alisa in Denmark
>
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Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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