Ababi on thu 27 dec 01
When ever I have a lot of CaO in a given glaze I try to substitute it
with Fluorspar to try and get it mottled.
Here are some results
From Cindy Strnad we got revised:
Tenmoku Gold ^6 oxidation
=================
WHITING............. 10.00 10.00%
GERSTLEY BORATE..... 3.00 3.00%
LITHIUM CARBONATE... 5.00 5.00%
DOLOMITE............ 4.00 4.00%
FLINT............... 21.00 21.00%
IRON OXIDE RED...... 10.00 10.00%
CUSTER FELDSPAR..... 37.00 37.00%
EPK KAOLIN.......... 8.00 8.00%
MAGNESIUM CARBONATE. 2.00 2.00%
========
100.00
CaO 0.46* 9.62%
Li2O 0.21* 2.35%
MgO 0.14* 2.13%
K2O 0.13* 4.42%
Na2O 0.06* 1.44%
SrO 0.00* 0.01%
TiO2 0.00 0.03%
Al2O3 0.29 10.94%
B2O3 0.04 1.01%
P2O5 0.00 0.02%
SiO2 2.52 56.60%
Fe2O3 0.19 11.44%
I tried it. Now I am waiting to my next 06 firing to finish the test.
Here is the fluor version:
GOLDEN TENMOKU FLUOR 1201deg.C. Cone 6
------------------------------------------------------------------------
----------------------------
Formula Weight% Recipe
------------------------------------------------------------------------
----------------------------
KNO 0.189 6.46% FLUORSPAR 10.00
CaO 0.450 10.29% GB Average 3.00
MgO 0.154 2.52% Lithium Carbonate 5.00
Li2O 0.207 2.52% SILICA 22.00
Al2O3 0.289 12.01% RIO 10.00
P2O5 0.000 0.02% Custer feldspar 38.00
B2O3 0.039 1.09% EPK Kaolin 8.00
SiO2 2.657 65.05% Magnesium Carb Light 4.00
TiO2 0.001 0.04%
K2O 0.128 4.91%
Na2O 0.062 1.55%
Al:Si 9.187
Expan. 7.026
ST 368.084
It is mottled somehow yet I will see it after the 1000C firing.
Ababi Sharon
Kibbutz Shoval- Israel
Glaze addict
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
http://www.israelceramics.org/
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