Hal Mc Whinnie on fri 12 sep 03
VERA' EMERALD GLOSS GREEN GLAZE
CONE 4-6
FOR DARK CLAY BODIES
FIRED IN OXIDATION
barium carb 6.4
gertsley borate 20.8
whiting 1.3
custer spar 44.3
epk 2.1
flint 24.9
add for color
zinc oxide 3.4
copper carb 3.1
rutile dark 1.1
a thin coat yields a greenish gloss, a thick application yeirlds turquoise
to light blue
Ron Roy on mon 15 sep 03
This glaze may be stable but that is a fair amount of copper so only
testing will tell for sure. Certainly do the lemon test on it at room temp
for a couple of days and because it has barium you should have it lab
tested if you are going to use it as a liner glaze.
This is an ideal glaze in which to sub Frit 3134 for the GB - you then get
to add more clay - cut down the spar (because there is KNaO in the frit -
and get to add more clay - you then have better suspension.
Barium Carb - 6.0 (can be replaced with 4.5 strontium or 3.0 whiting)
F 3134 - 25.5
Talc - 3.0
Custer - 25.5
Zinc - 3.5
EPK - 12.5
Silica - 24.0
Total - 100.0
Copper Carb 3.2
Rutile - 1.2
I usually refuse to work on Barium glazes but this was irresistible - just
don't attach my name to it.
RR
>VERA' EMERALD GLOSS GREEN GLAZE
>CONE 4-6
> FOR DARK CLAY BODIES
> FIRED IN OXIDATION
>
>barium carb 6.4
>gertsley borate 20.8
>whiting 1.3
>custer spar 44.3
>epk 2.1
>flint 24.9
>
>add for color
> zinc oxide 3.4
>copper carb 3.1
>rutile dark 1.1
> a thin coat yields a greenish gloss, a thick application yeirlds turquoise
>to light blue
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Hal Mc Whinnie on mon 15 sep 03
i think these are good suggestions however the original glaze was designed
for hand built pieces so the barium is not a problem since the work for which it
was designed was sculptural and not functional.
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