Ababi on wed 21 mar 01
Hello ClayArters!
It was one of the letters, that when I read it again before deleting
them, I realized that I did not write clear.
The Opal blue, the Floating blue as well as this glaze which I love,
Speckles----- Gray
==================
GERSTLEY BORATE..... 20.00 18.78%
NEPHELINE SYENITE... 20.00 18.78%
FRIT 3110........... 15.00 14.08%
BALL CLAY........... 15.00 14.08%
QUARTZ.............. 30.00 28.17%
*IRON OXIDE RED...... 1.50 1.41%
TITANIUM DIOXIDE.... 5.00 4.69%
========
106.50
CaO 0.42* 5.09%w 6.27%m
MgO 0.12* 1.02%w 1.75%m
K2O 0.06* 1.29%w 0.95%m
Na2O 0.40* 5.26%w 5.87%m
TiO2 0.28 4.78%w 4.14%m
Al2O3 0.46 10.00%w 6.78%m
B2O3 0.40 5.93%w 5.89%m
SiO2 4.60 59.31%w 68.25%m
Fe2O3 0.01 0.22%w 0.10%m
(My software did not see theRIO but it does not change the alumina)
L.O.I. 7.10
Si:Al 10.06
SiB:Al 10.93
Expan 7.37
Notes:
1) BLUE GRAY:1% COBALT OXIDE
2)BEIGE: 3RUTILE
3)GREEN1 COPPER CARBONATE
4)DARK BLUE: 3COBALT OXIDE
MUST BE ABOVE kOREN 27
I think the small amount of G.B. can replaced easily/
.......Well, the three glazes are high with Alumina. This one, from Pottery
Making
Illustrated, with a small changing, has 0.46 mol alumina oxide. Pretty high
for ^6
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Koren 27 ^5 -6
QUARTZ.............. 26.00 26.53%
WHITING............. 13.00 13.27%
ENGLISH KAOLIN CC31. 5.00 5.10%
ZINC OXIDE.......... 10.00 10.20%
SODA FELDSPAR....... 35.00 35.71% The analyses of this material is
generic
Barium Carbonate.... 9.00 9.18%
========
98.00
CaO 0.40* 8.82%
K2O 0.00* 0.18%
Na2O 0.21* 5.00%
ZnO 0.38* 12.09%
TiO2 0.00 0.01%
Al2O3 0.26 10.39%
SiO2 2.72 63.46%
Fe2O3 0.00 0.05%
Si:Al 10.37
SiB:Al 10.37
Expan 7.32
Koren 27..........On the other hand, has low alumina.
to make it literature, would be, to take a thin layer of chocolate on top
of
water. when you heat the pan, the chocolate melts, and start move without
any
order, well literature never been my good side
You can try it on a mug. I prefer buff or white. Cover it with Koren's glaze
and than, even, with a spoon, drip some drops of opal, or speckle or
floating blue. On a saucer, try koren 27, with a wide brush make some
strokes with any of the "top-glazes":The Opal blue, the Floating blue or my
favorite Speckle blue Grey.
If you make fruit dishes, with slits, you can let the top glaze play it's
game.
This combination, is the one among the 200 glazes that I know, make the
people in my small community believe, that I understand "something" in
ceramics.
Ababi Sharon
ababisha@shoval.ardom.co.il
http://members4.clubphoto.com/ababi306910/
Ababi on thu 22 mar 01
Another aspect:
I send again the letter with an important add:
The main point is completely different. How did it start? These beautiful
glazes contain a LOT of rutile! In most times I got Speckle green, Opal
green and of coarse FLOATING GREEN. only above such a glaze, as the koren27
I got nice colors. Sometimes, as I wrote about the chocolate, the RIO the
rutile and the cobalt are kind of separating from each other and making
beautiful spots
Off coarse you can use Strontium....7.05% or replace the barium with whiting
in the same amount as the barium, but only on white claybody, otherwise it
"paints" in white your piece.
Ababi Sharon
ababisha@shoval.ardom.co.il
http://members4.clubphoto.com/ababi306910/
----- Original Message -----
From: "Ababi"
To:
Sent: Wednesday, March 21, 2001 6:47 PM
Subject: Opal blue, the Floating blue as well as this glaze which I love,
> Hello ClayArters!
> It was one of the letters, that when I read it again before deleting
> them, I realized that I did not write clear.
> The Opal blue, the Floating blue as well as this glaze which I love,
>
> Speckles----- Gray
> ==================
> GERSTLEY BORATE..... 20.00 18.78%
> NEPHELINE SYENITE... 20.00 18.78%
> FRIT 3110........... 15.00 14.08%
> BALL CLAY........... 15.00 14.08%
> QUARTZ.............. 30.00 28.17%
> *IRON OXIDE RED...... 1.50 1.41%
> TITANIUM DIOXIDE.... 5.00 4.69%
> ========
> 106.50
>
> CaO 0.42* 5.09%w 6.27%m
> MgO 0.12* 1.02%w 1.75%m
> K2O 0.06* 1.29%w 0.95%m
> Na2O 0.40* 5.26%w 5.87%m
> TiO2 0.28 4.78%w 4.14%m
> Al2O3 0.46 10.00%w 6.78%m
> B2O3 0.40 5.93%w 5.89%m
> SiO2 4.60 59.31%w 68.25%m
> Fe2O3 0.01 0.22%w 0.10%m
> (My software did not see theRIO but it does not change the alumina)
> L.O.I. 7.10
> Si:Al 10.06
> SiB:Al 10.93
> Expan 7.37
>
> Notes:
> 1) BLUE GRAY:1% COBALT OXIDE
>
> 2)BEIGE: 3RUTILE
>
> 3)GREEN1 COPPER CARBONATE
>
>
> 4)DARK BLUE: 3COBALT OXIDE
>
> MUST BE ABOVE kOREN 27
> I think the small amount of G.B. can replaced easily/
>
> .....Well, the three glazes are high with Alumina. This one, from Pottery
> Making
> Illustrated, with a small changing, has 0.46 mol alumina oxide. Pretty
high
> for ^6
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Koren 27 ^5 -6
>
>
> QUARTZ.............. 26.00 26.53%
> WHITING............. 13.00 13.27%
> ENGLISH KAOLIN CC31. 5.00 5.10%
> ZINC OXIDE.......... 10.00 10.20%
> SODA FELDSPAR....... 35.00 35.71% The analyses of this material is
> generic
> Barium Carbonate.... 9.00 9.18%
> ========
> 98.00
>
> CaO 0.40* 8.82%
> K2O 0.00* 0.18%
> Na2O 0.21* 5.00%
> ZnO 0.38* 12.09%
> TiO2 0.00 0.01%
> Al2O3 0.26 10.39%
> SiO2 2.72 63.46%
> Fe2O3 0.00 0.05%
>
> Si:Al 10.37
> SiB:Al 10.37
> Expan 7.32
> Koren 27..........On the other hand, has low alumina.
> to make it literature, would be, to take a thin layer of chocolate on top
> of
> water. when you heat the pan, the chocolate melts, and start move without
> any
> order, well literature never been my good side
> You can try it on a mug. I prefer buff or white. Cover it with Koren's
glaze
> and than, even, with a spoon, drip some drops of opal, or speckle or
> floating blue. On a saucer, try koren 27, with a wide brush make some
> strokes with any of the "top-glazes":The Opal blue, the Floating blue or
my
> favorite Speckle blue Grey.
> If you make fruit dishes, with slits, you can let the top glaze play it's
> game.
> This combination, is the one among the 200 glazes that I know, make the
> people in my small community believe, that I understand "something" in
> ceramics.
> Ababi Sharon
> ababisha@shoval.ardom.co.il
> http://members4.clubphoto.com/ababi306910/
>
>
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