Alisa Clausen on tue 7 jun 05
Glaze test for Dry Yellow Pumpkin, cone 6, oxidation.
Glaze tested on white midrange stoneware fired in electric oxidation to =
1220c. (2228f)
Source: Clayart
Credited to: our Ababi Sharon (deceased)
Firing ramp:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)=20
80c p/h to 1220c (176f - 2228f)
15 min. soak
cool down max. to 1100c (2012f)
Hold 1 hour
Shut off kiln
Recipe:
18 Frit 3134
19 Dolomite
24 Kaolin
16 Calcined Kaolin
16 Spodumene=20
8 Flint
-----------------------
101 gr.
ADD
6 Rutile
14 Titanium Diox.
Note: All raw materials are measured up or down to the nearest half =
decimal. =20
Colorants or additives to a 100 gram test batch are measured in percent =
to the 100 gram test batch.
Results:
Used 40 Kaolin instead of 24 Kaolin and 16 Calcined Kaolin.
Mat, smooth, covering glaze. Slight sheen on surface. Color is a truly =
mellow yellow orange. On closer look at the surface, there is some =
pitting, but cannot feel it.
The glaze has an area that is darker and toastier than rest of test =
tile. An unusual color, as it is very much in the yellow family.
I will re-fire it to cone 8 to see how it does.
Regards from Alisa in Denmark
Ron Roy on thu 9 jun 05
This glaze is probably underfired at cone 6 and has a low expansion rate.
RR
>Glaze test for Dry Yellow Pumpkin, cone 6, oxidation.
>Glaze tested on white midrange stoneware fired in electric oxidation to
>1220c. (2228f)
>
>Source: Clayart
>Credited to: our Ababi Sharon (deceased)
>
>Firing ramp:
>100c p/h to 600c (212f - 1112f)
>150c p/h to 1140c (302f - 2084f)
>80c p/h to 1220c (176f - 2228f)
>15 min. soak
>cool down max. to 1100c (2012f)
>Hold 1 hour
>Shut off kiln
>
>Recipe:
>18 Frit 3134
>19 Dolomite
>24 Kaolin
>16 Calcined Kaolin
>16 Spodumene
>8 Flint
>-----------------------
>101 gr.
>
>ADD
>6 Rutile
>14 Titanium Diox.
>
>Note: All raw materials are measured up or down to the nearest half decimal.
>Colorants or additives to a 100 gram test batch are measured in percent to
>the 100 gram test batch.
>
>Results:
>Used 40 Kaolin instead of 24 Kaolin and 16 Calcined Kaolin.
>
>Mat, smooth, covering glaze. Slight sheen on surface. Color is a truly
>mellow yellow orange. On closer look at the surface, there is some
>pitting, but cannot feel it.
>The glaze has an area that is darker and toastier than rest of test tile.
>An unusual color, as it is very much in the yellow family.
>I will re-fire it to cone 8 to see how it does.
>
>
>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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