Tom Buck on sun 7 oct 01
A week ago Cindy Strnad posted a version of Tenmoku Gold for Cone 6
oxidation, one that she has used successfully this past summer. Since my
friend Tak wants to try this, I decided to do a revision again using the
materials more suitable to our area, and lower outgassing too. Here are
two versions:
Tenmoku Gold Cone 6 Oxidation
39.0 G-200 Feldspar (or equal)
12.0 Wollastonite
7.0 Talc New York
5.0 Lithium Carbonate
4.0 Ferro frit 3134 (or equal)
5.0 EPK (or other kaolin)
18.0 Flint/silica
10.0 Iron oxide red (Fe2O3)
The above version gives a SiO2/Al2O3 ratio and a Thermal Expansion similar
to the version cited by Cindy S. (7.4 vs 7.6 x 10 to the minus 6 power,
temperature in degrees Celsius/Centigrade). And the Seger (aka unity)
Formula is quite close too.
For those who want to try this on a Cone 6 porcelain (or porcelaineous
stoneware) with its lower Thermal Expansion, here is another version:
Tenmoku Gold Cone 6 Oxiation, low expansion
30.0 Spodumene (Australian)
20.0 Wollastonite
7.0 Talc New York
3.5 Ferro frit 3134 (or equal)
28.0 Flint/slica
10.0 Iron oxide red (Fe2O3)
1.5 Bentonite
This version has a ratio that is still in the glossy range, and a Thermal
Expansion of 6.2x10 to the minus 6 (degrees Celsius).
Tak & I will be trying these soon. and will report.
til later. Peace. TomB.
Tom Buck ) tel: 905-389-2339
(westend Lake Ontario, province of Ontario, Canada).
mailing address: 373 East 43rd Street,
Hamilton ON L8T 3E1 Canada
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