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glaze test for brian kemp's lichen glaze, cone 6 ox.

updated fri 4 feb 05


Alisa Clausen on thu 3 feb 05

Glaze tested on white midrange stoneware fired in electric oxidation to =
1240c. (2264f)

Source: Clay Times Nov/Dec. 2001
Credited to: Brian Kemp, used by Bacia Edelman

Firing ramp:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)=20
80c p/h to 1240c (176f - 2264f)
5 min. soak
cool down max. to 800c (1472f)
Hold 1 hour
Shut off kiln

30 Soda Spar
30 Magnesium Carb.
10 Frit 3134
10 Talc
20 Kaolin

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.

The glaze pulled, separated and crawled from the underlying glaze of =
contrasting color (used Nutmeg glaze, see archives)making a high and =
textured lichen effect. The glaze is slightly dry and although the =
effect is very textured, it separated into islands with sharper borders =
than the rounder, ball like islands I was aiming for. With the fine =
help of Bacia, I was able to get this glaze to work this far, because =
she told me that it must be applied very thickly, until it crackles a =
bit when dried, but to much so that it will fall off the pot as you lift =
it into the kiln. There is a lot to experiment with this glaze. It can =
also be colored with stains and oxides. =20

Regards from Alisa in Denmark