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glaze test for 1631 aqua, cone 6, redux

updated thu 3 may 07


Alisa Clausen on wed 2 may 07

Glaze test for 1631 Aqua, Cone 6, Redux.

Source: Ceramic Arts, Buyers Guide, 2007
Credited to: Patrick Horsley

Fired on mid fire white stoneware

Firing ramp with an electric controller is:
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 900c (1652f)
Hold 30 minutes

Shut off kiln

Colorants or additives to a 100 gram batch are measured in percent to the
100 gram batch.

Amount Ingredient
47.5 Barium Carbonate
47.5 Nepheline Syenite
5 Pemco Frit 626

100 Total

4 Bentonite
9 Copper Carbonate

Unity Oxide
.224 Na2O
.062 K2O
.003 MgO
.064 CaO
.646 BaO
1.000 Total

.292 Al2O3
.045 B2O3
.001 Fe2O3

1.395 SiO2

4.8 Ratio
10.7 Exp
Mat,semi opaque, smooth aqua to dark green glaze. Darker and more opaque
where thickest. Texture on test tile showed through glaze.

Note: Redux. glaze fired in oxidation.