Alisa Clausen on tue 7 jun 05
in measurements, not grams
Glaze test for Tony Hansen 20 x 5 gloss, cone 6 Oxidation, in =
measurements, not grams
Glaze tested on white midrange stoneware fired in electric oxidation to =
1220c. (2228f)
Source:
Credited to:
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:
20 Frit 3134
20 EPK
20 Silica
20 Custer Spar
20 Wollastonite
tested this glaze, using a cup as a measurement. Weighed 20 gram of =
Frit 3134 and continued by measuring same volume of the remaining raw =
materials in recipe.
Measured contents of each cup and recipe in grams was as follows:
20 Frit 3134
9 EPK
16 Silica
16 Custer Spar
20 Wollastonite
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:
The glaze fired identical to the original recipe. Using Glaze Master to =
compare the two recipes, the volume recipe was only slighter higher in =
expansion, and the Si:Al ratio was also higher, signifying a very glossy =
glaze. Both glazes were a clear, transparent gloss.
I wanted to try this for a long time, just to see if there would be a =
great difference in volume or gram with this particular recipe, as all =
parts are equal. Although the parts weigh in differently as opposed to =
the equal parts in the gram recipe, the resulting glaze was similar. =
Interesting test.
Regards from Alisa in Denmark
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