Alisa Liskin Clausen on sun 8 sep 02
Glaze test for Clear, cone 6 redux, fired to cone 6 ox.
Glaze tested on white midrange stoneware fired in electric oxidation to =
1220c.
Source:
Credited to:Clayart
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:
30 Neph. Syenite
21 Gerstley Borate
10 EPK
8 Wollastonite
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 Gerstely Borate
Results:
Clear gloss, crazed on my clay body.
Regards from Alisa in Denmark
Ron Roy on fri 13 sep 02
Glaze totals only 69 - is anything left out.
Glaze is short of silica so in this form not stable for food - most frits
have lots of silica - when I use 3134 the silica is OK but expansion is
high with both.
RR
>Glaze test for Clear, cone 6 redux, fired to cone 6 ox.
>
>Glaze tested on white midrange stoneware fired in electric oxidation to 1220c.
>
>Source:
>Credited to:Clayart
>
>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:
>30 Neph. Syenite
>21 Gerstley Borate
>10 EPK
>8 Wollastonite
>
>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 Gerstely Borate
>Results:
>Clear gloss, crazed on my clay body.
>Regards from Alisa in Denmark
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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