June Perry on sun 6 mar 05
Here are a couple of cone 8 oxidation recipes that I found in my glaze
database. I haven't tested these and I can't attest to their durability, etc.
Naturally, the high copper in one of these would make it an unstable glaze
for functional work.
I think you might find that many glazes listed as cone 9-10 would work at
cone 8. Likewise, some glazes listed as cone 6, might also work at cone 8.
There is a called Somebrite that some friends use at cone 10, and I think it's
pretty low in silica and alumina for cone 10, if memory serves, me, so you
might want to try that at cone 8. The recipe would be in the archives I think.
If not, email me and I can send it to you.
I suggest that you run these through a glaze calculation program to check if
they're up to today's standards for safety and durability. Most of these are
from publications in the 70's and 80's.
#35 6-9 OXIDATION GREEN/BLACK
CUSTER FELDSPAR 1548
FLINT 168
WHITING 564
ZINC OXIDE 258
KAOLIN 462
ADD: BLACK IRON OXIDE 150 GRAMS , COBALT OXIDE 30 GRAMS
#768 CONE 6-9 VOLCANIC ASH TRANSPARENT AT CONE 9
ZINC OXIDE 8.4
VOLCANIC ASH 82.7
WHITING 8.9
ADD: BENTONITE 1%
#231 KENS ASH GLAZE 8 OXIDATION
ASH 30
NEPHELINE SYENITE 40
BORAX 10
TALC 10
ADD: RED IRON OXIDE 2 TO 3%, EPSOM SALTS 1T.TO 30 LBS OF GLAZE
# 271 VERSION 2 SATIN MATT 8-10 REDUCTION OXIDATION IRON RED
BARIUM CARBONATE 7.8
WHITING 12.5
ZINC OXIDE 5.7
CUSTER FELDSPAR 41.8
EDGAR PLASTIC KAOLIN 10.9
FLINT 21.3
ADDl: RED IRON OX 4%, COPPER CARB 5.3%
#331 LEACH CLEAR 8-10 REDUCTION OR OXIDATION CLEAR
WHITING 20
KINGMAN FELDSPAR 20
NEPHELINE SYENITE 20
EDGAR PLASTIC KAOLIN 10
FLINT 30
#687 MATT WHITE 8-10 REDUCTION OR OXIDATION WHITE MATT
KONA F4 SODASPAR 38
FLINT 36
WHITING 17
TALC 6
ZINC OXIDE 3
#688 TAN MATT 8-10 REDUCTION OXIDATION TAN , CREAM IN OXIDATION
POTASH FELDSPAR 38
WHITING 22
KAOLIN 20
FLINT 15.9
TITANIUM OXIDE 4.1
#696 BLACK GLOSS 8-9 REDUCTION OR OXIDATION BLACK, BROWN IN REDUCTION
POTASH FELDSPAR 66.12
WHITING 8.26
FLINT 8.26
TIN OXIDE 8.26
RED IRON OXIDE 5.79
ZINC OXIDE 3.31
#810 SEMI MATT CELERY GREEN 8-10 OXIDATION
WOLLASTONITE 14.7
KINGMAN FELDSPAR 11.5
SPODUMENE 1.6
ALBANY SLIP 59.7
FLINT 12.5
ADD: RED IRON OXIDE 1%,TITANIUM DIOX 4.2,BENTONITE 2
# 811 OPAQUE SEMI MATT EARTH GREEN 8-10 OXIDATION
GERSTLEY BORATE 12.4
DOLOMITE 6.6
TALC 14.3
KINGMAN FELDSPAR 42.8
KAOLIN 4.9
FLINT 19.0
ADD: RUTILE 4%,RED IRONOX 5%,BENTONITE 2%
# 1236 VIVIKAS 2 - 6 (CAN FIRE TO CONE 10) REDUCTION (MIGHT
WORK IN OXIDATION)
ZINC OXIDE 8.27
COLEMANITE 17.54
BARIUM CARBONATE 6.71
TALC 6.44
G200 FELDSPAR 38.56
FLINT 22.48
ADD: BENTONITE 1%
COLORS:
A: COPPER OXIDE 2%
B: BLUE COBALT OXIDE 1%
C: NICKEL OXIDE 1%
D: BLUE-GREY NICKEL 1%,COBALT OXIDE 1%
# 638 SEMIT MATT MILKY BLUE 7-9 REDUCTION OR OXIDATION
POTASH FELDSPAR 60
WHITING 10
FLINT 30
#641 DOLOMITE MATT 7-9 REDUCTION OR OXIDATION WHITE MATT
POTASH FELDSPAR 30
DOLOMITE 30
WHITING 5
CHINA CLAY 30
FLINT 5
CAN USE BALL CLAY IN OX FOR WHITE
Regards,
June Perry
_http://www.angelfire.com/art2/shambhalapottery/_
(http://www.angelfire.com/art2/shambhalapottery/)
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