Eric Suchman on thu 7 nov 02
Can one of the glaze people give me an analysis of this glaze please?
Durability, solubility, food safety, etc.
I'm expecting that it is really only good for a non-food surface.
^06-04 Curdle
Borax 69.23%
Soda spar 19.23%
Red Clay 11.54%
_______
100%
Add:
Zinc ox. 7.5-11.5%
Tin ox. 15.0-30.0%
Thanks,
Eric in Oceanside
Ababi on fri 8 nov 02
Hi!
I changed the numbers because I made them to 100% including the zinc.
Is this glaze kind of crater glaze?
CURDLE GLAZE 06 TO 04
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 04 1060 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Borax 63.80
NC-4 Soda Feldspar 17.70
RedArt Clay 10.60
ZINC OXIDE 7.80
Tin Oxide 20.28
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.526 12.10%
CaO 0.024 0.40%
MgO 0.018 0.22%
ZnO 0.432 10.54%
Al2O3 0.224 6.85%
B2O3 0.754 15.74%
SiO2 1.420 25.59%
TiO2 0.006 0.15%
K2O 0.241 6.82%
Na2O 0.284 5.29%
SnO2 0.6063 27.39%
Al:Si 6.33
Expan. 7.42 (The expansion was made with the huge amount of the tin. The way I
can do in Matrix. usually it is so small that I don't bother to use but here it is significant
different using 20% tin.)
ST 278.06
I think it was an evil person who gave you this glaze.
First what is > Zinc ox. 7.5-11.5% I took the average. Too high for these cones
Tin: Why so much, What do you do with 20- 30%
Borax: How do you dissolve so much borax in the glaze.
If you look for good white glazes.
Please go to:
http://art.sdsu.edu/ceramicsweb/
Click on Education
Then on: Articles on a variety of ceramic topics
Now to:Majolica Overview by Linda Arbuckle
At last:Majolica & Lowfire Recipes
from Linda Arbuckle
Foodsafe below ^6? I don't know.
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
---------- Original Message ----------
>Can one of the glaze people give me an analysis of this glaze please?
>Durability, solubility, food safety, etc.
>I'm expecting that it is really only good for a non-food surface.
> ^06-04 Curdle
> Borax 69.23%
> Soda spar 19.23%
> Red Clay 11.54%
> _______
> 100%
> Add:
> Zinc ox. 7.5-11.5%
> Tin ox. 15.0-30.0%
> Thanks,
> Eric in Oceanside
>______________________________________________________________________________
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