Ababi on sat 31 aug 02
We use here in Israel a German frit ( made in Italy or Spain)
http://www.cct.es/welcome.htm
called frit 2120 similar to 3110 without the B2O3 Here is the analysis
for Europeans and mid easterns
FRIT A 2120 p
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.801 27.60%
CaO 0.199 6.20%
Al2O3 0.049 2.80%
SiO2 1.898 63.40%
Na2O 0.801 27.60%
Al:Si 38.39
Expan. 14.74
ST 254.94
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
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