Alisa Clausen on wed 2 may 07
Glaze test for Shiny Clear GTB-1
Source: Ceramic Arts Buyers Guide, 2007
Credited to: Wayne Bates, to use over his engobes.
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.
Substitutions in this test: Frit 3134 subbed with local Boron Frit,
Feldspar used is Forshammer, Boron Frit is subbed for Gerstley Borate. All
substitutions are done not by Mol. Wts., but gram for gram.
Amount Ingredient
8 Whiting
27 Gerstley Borate--1999
39 Nepheline Syenite
8 Kaolin--EPK
18 Silica
100 Total
Unity Oxide
.275 Na2O
.072 K2O
.006 MgO
.647 CaO
1.000 Total
.508 Al2O3
.369 B2O3
.002 Fe2O3
3.148 SiO2
.001 TiO2
0 P2O5
6.2 Ratio
7.6 Exp
Results
Gloss, transluscent glaze. Badly crazed on my claybody.
Best regards, Alisa from Denmark
| |
|
