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glaze test for crystal glaze, light green/blue, orange/blue, cone 6,

updated mon 9 sep 02


Alisa Liskin Clausen on sun 8 sep 02


Glaze test for Crystal Glaze, Light Green/Blue, Orange/Blue, cone 6, ox.

Glaze tested on white midrange stoneware fired in electric oxidation to =

Credited to:

Firing ramp:
100c up/he to 600c (212f - 1112f)
150c up/he to 1100c (330f - 2012f)=20
100c up/he to 1220c (212f - 2228f)
cool down max. per hour to 1100c=20
cool 80c per hour to 800c
shut off kiln

5 Kaolin
15 Flint
24 Zinc Oxide
13 Whiting
7 Lithium Carb.
36 Feldspar

For light green with blue crystals
5 Rutile
1 Copper Carb.

For Orange with blue crystals
1 Nickel

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: None

Lt. Green with blue crystals
Fluid gloss glaze with turquoise ground and large green crystals. Where =
glaze pooled, looks like an aerial view of the Caribbean islands. =20

Orange with blue crystals
Orange to rust transparent ground with large light blue crystals with =
dark blue crystals inside. =20

Personal: This is the first time I tried crystal glazes, and these two =
variations are amazing. The test tiles are like precious gems. =20
The crystals have such clear structures and the =
formations are look geographical.

Regards from Alisa in Denmark