Craig Martell on fri 30 jun 00
mary beth sez:
>I have this in my glaze file. I used it at Haystack but have never mixed it
>for my studio. Worked fine as I recall.
>
>Haystack Oestreich Temoku
>Cone 10, reduction
>
>Custer Spar 42.16
>Whiting 15.81
>Silica 21.08
>EPK 12.00
>Zinc Oxide 2.03
>Bentonite 2.00
>
>Red Iron Oxide 8.00
>
>This formula doesn't balance so I am suspicious of it.
Hi:
This glaze is just fine for cone 10 and should be a nice tenmoku. It's
very close to one that I use called Peach Black that was formulated by
Harlan House. The glaze that you have sent in is a .6 limestone tenmoku
and all the oxides are right in the ballpark on the molecular
level. Still, it's always best to test first. Here's the recipe
retotalled to 100% with the iron included in the recipe and not given as an
addition. For a reduction glaze, the zinc would probably not be a
necessary addition. As far as food use goes, I'd eat off this glaze any
day as long as eggplant isn't on the menu. Know what I mean? Eggplant
will mess up my yin-yang balance.
custer feldspar..... 41.94 41.94%
whiting............. 15.73 15.73%
zinc oxide.......... 2.02 2.02%
epk kaolin.......... 11.94 11.94%
silica.............. 20.97 20.97%
iron oxide red...... 7.41 7.41%
========
100.00
CaO 0.64* 9.83%
MgO 0.00* 0.01%
K2O 0.18* 4.77%
Na2O 0.08* 1.34%
ZnO 0.10* 2.21%
TiO2 0.00 0.05%
Al2O3 0.46 12.91%
P2O5 0.00 0.03%
SiO2 3.67 60.73%
Fe2O3 0.18 8.11%
Cost/kg 0.52
Si:Al 7.98
SiB:Al 7.98
Expan 7.72
later, Craig Martell in Oregon
MBnews@AOL.COM on fri 30 jun 00
I have this in my glaze file. I used it at Haystack but have never mixed it
for my studio. Worked fine as I recall.
Haystack Oestreich Temoku
Cone 10, reduction
Custer Spar 42.16
Whiting 15.81
Silica 21.08
EPK 12.00
Zinc Oxide 2.03
Bentonite 2.00
Red Iron Oxide 8.00
This formula doesn't balance so I am suspicious of it. Still it is a
starting point for testing. The work I brought home was a nice glossy black
with slight golden breaks. Good luck.
Mary Beth Bishop
Durham, NC
| |
|
