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glaze test for oxides under tony hansen's 5 x 20 glaze, cone 6, ox.

updated sun 17 nov 02


Alisa Liskin Clausen on sat 16 nov 02

Glaze test for oxides under Tony Hansen's 5 x 20 glaze plus 10% =
Zircopax, cone 6, ox. =20

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

Credited to: Tony Hansen

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

20 Frit 3134
20 EPK
20 Silica
20 Custer spar
20 Wollastonite

10 Zircopax

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.

Forshammer spar for Custer
Local frit for 3134

Oxides showed well under this white, gloss glaze. Oxides Cobalt, RIO, =
black stain, Chrome and Ocher showed well under glaze.
Chrome stayed green, slightly muted in color by the opacifier. The =
colored oxides all have sharp edges and stayed exactly as painted.
This glaze is the glossiest of all of these tests and the oxides showed =
the clearest under this glaze. However, I am looking for a matter =
Otherwise, this is a staple glaze in my studio.

Regards from Alisa in Denmark