jason elfert on sun 24 nov 96
in my last firing (9-10 reduction) i tested the following two glazes. both
came out grey green. babu celedon came out as usual. any thoughts on what
went wrong?
amber celedon 9-10 reduction
albany 36
custer 22
gerstly 3
wollastonite 14
whiting 8
flint 14
epk 3
____
100
yellow ochre 9
coleman apple green 9-10 reduction
k-200 spar (used kona f-4) 44
epk 10
whiting 18
flint 28
_____
100
red iron ox 1
thanks , linda webb elfert
"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez)" on mon 25 nov 96
Linda :
I've tried both of these glazes with mixed results. The amber celadon is
almost identical to Cushing Amber Celadon. A better transparent amber
honey glaze is the following :
Weiser's Honey ^ 9 Reduction ( I fire to ^ 11)
Potash Feldspar 36.7
Flint 25.5
Whiting 18.9
Ball Clay 9.2
Soda Feldspar 5.1
Kaolin 2.6
Dolomite 2.0
Red Iron Oxide 8.0 %
The Apple Green Celadon is very similar to one I've used with good
results except you left out the chrome oxide. Try the following :
Coleman Apple Green Celadon ^ 10 Reduction
Whiting 17.95
Potash Feldspar 43.59
EPK Kaolin 10.26
Flint 28.20
100.00 %
Add:
Chrome Oxide 0.25 %
Red Iron Oxide 0.77 %
If your interested in a blue celadon try the following :
Coleman Ice Blue Celadon ^ 10 Reduction
Potash Feldspar 46
Barium Carbonate 16
China Clay 6 ( I use EPK )
Silica 32
100 %
Add:
Yellow Iron Oxide 1 %
Note: A very nice glaze. Unfortunately, it crazed on two different
porcelain bodies I tried it on.
Another thing you might try is firing celadons in a saggar. Someone on
the list correct me if I'm wrong, but didn't the Chinese fire celadons in
saggars in a wood kiln. I've fired in saggars with no lids with good
results.
Good luck!
Rafael
rmr3431@dcccd.edu
>>> jason elfert 11/24/96 10:24am >>>
----------------------------Original message----------------------------
in my last firing (9-10 reduction) i tested the following two glazes. both
came out grey green. babu celedon came out as usual. any thoughts on
what
went wrong?
amber celedon 9-10 reduction
albany 36
custer 22
gerstly 3
wollastonite 14
whiting 8
flint 14
epk 3
____
100
yellow ochre 9
coleman apple green 9-10 reduction
k-200 spar (used kona f-4) 44
epk 10
whiting 18
flint 28
_____
100
red iron ox 1
thanks , linda webb elfert
rballou@mnsinc.com on wed 27 nov 96
>----------------------------Original message----------------------------
>in my last firing (9-10 reduction) i tested the following two glazes. both
>came out grey green. babu celedon came out as usual. any thoughts on what
>went wrong?
>amber celedon 9-10 reduction
>
>albany 36
>custer 22
>gerstly 3
>wollastonite 14
>whiting 8
>flint 14
>epk 3
> ____
> 100
>yellow ochre 9
>
>thanks , linda webb elfert
It's my understanding that ochre changed a couple of years ago and amber
celadon just isn't the same with the new ochre. Maybe you can find a supply
of the old ochre and test it.
Ruth Ballou
rballou@mnsinc.com
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