Ababi on sat 31 aug 02
ABABI'S CONCRETE FOR ^6
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Cone 6 1201 deg.C. -
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Portland Cement 22.00
Magnesium Carb Light 8.00
Borax 15.00
KAOLIN 20.00
SILICA 15.00
Cryolite 20.00
,The cryolite is pretty expensive here and I use soluble materials because it is use and
dump glaze
it gives kind of clear silky mottled matte.
Here is a low cost version of the beautiful glaze of Yehuda Koren my friend and
adviser .
I made it for my students
KOREN GIR
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Cone 6 1201 deg.C. -
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SILICA 26.00
ENGLISH KAOLIN CC31 5.00
ZINC OXIDE 10.00
FELDSPAR SODA F7/SE 35.00
Calcium Carbonate 22.00
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Seger Weight%
KNO 0.148 4.35%
CaO 0.540 14.10%
MgO 0.011 0.20%
ZnO 0.302 11.45%
Al2O3 0.191 9.07%
SiO2 2.175 60.84%
K2O 0.006 0.27%
Na2O 0.141 4.08%
Al:Si 11.38
Expan. 7.72
ST 372.82
Comment: our soda feldspar has a lot of silica
try it as it is if it does not work send me the name of the kind of soda feldspar on you
hand and will adjust you.
9 of the whiting ( Calcium Carbonate) replaces the original barium. Therefor the glaze
a bit whitening the ware. if you want it nicer replace that amount of 9 whiting with 7
strontium carbonate
In http://members4.clubphoto.com/ababi306910/679354/
You can see variations on this glaze
This is another glaze of Marty Anderson
MARTYS SANDY BROWN
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Cone 6 1222 deg.C. -
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NORFLOAT POTASH FELDSPAR 31.00 use G 200
SILICA 24.00
Calcium Carbonate 24.00
ENGLISH KAOLIN CC31 12.00
ZINC OXIDE 8.00
Bentonite 2.00
Rutile 3.20
Red Iron Oxide 3.20
Black Iron Oxide 3.00
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From my experience: white to buff claybody.
You can try it as clear , without the colorants will probably give you silky clear.
I adjusted this High fire to ^6
NICE ASH CONE 6
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Cone 6 1201 deg.C. -
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PINE ASH 25.00
FELDSPAR SODA F7/SE 30.00
BALL CLAY AK 10.00
Bentonite 8.00
Wollastonite 7.00
SILICA 20.00
copper oxide 3.00
You can try it clear.
In my site in the glaze test pages and my stoneware page you can see most of these
glaze
Now I offer you the best test:
Take a kitchen sieve
Using dry soil. You can break the soil by warming to 100C than with a mixer on
electric drill. Sieve it as small as possible but do not try hard 9 give it to the kids but
do not give them my address!
to each batch of 75 sieved soil add 25 flux can use Zinc, Soda ash, sodium
bicarbonate, borax, GB, whiting, cement Portland ( grey ) wood ash and by itself.
You can add colorant perhaps 1 -3 copper oxide that is a flux by itself. The kids will
learn more about they homeland!
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
localpotter@walla.co.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
---------- Original Message ----------
>Here is an empirical match for FRIT 3110 that I did on Tony Hansen's
>software. It would be better to reformulate the recipe itself, than trying to
>make up separate batches of this frit substitute.
>Yes, frits are expensive, but when you calculate how little is in each pot
>you glaze, you talking of a few extra pennies.
>I think it's better to raise the price of you mug by 10 or 20 cents than to
>try to use this substitute. You'll notice all that soluble soda ash which can
>present some problems.
>If you calculate the whole recipe, it might be possible to avoid the soda
>ash; but maybe not. It depends on the whether or not the recipe calls for
>more sodium through Nepheline Syenite or Potspar etc.
>FRIT 3110 SUBSTITUTE:
>13.20 CUSTER FELDSPAR
> 7.10 WHITING
>39.80 SODA ASH
>35.33 SILICA
> 4.57 BORAX
>Regards,
>June
>______________________________________________________________________________
>Send postings to clayart@lsv.ceramics.org
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>settings from http://www.ceramics.org/clayart/
>Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
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