Ababi on fri 28 mar 03
Robin, ( did not sign his books for me) Writes in the Ceramic Spectrum, that the
whole story is about 13 oxides or so.
It is very simple: For you knowledge: Math is only about 10 numbers, digits, or so, very
simple too. However like in math there are endless ways to exhibits these oxides. As
a glaze addict I have about 90 materials some of them are just the test of the "big
world".
With these 90 materials I can make endless kinds of glazes with the weirdest
Combinations.
HOWEVER
Crystal glazes are much easier only four or five materials! If you will look in recipes like
mine:
ABABI'S CRYSTAL GLAZE N
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1222 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
frit A 2120 45.00
zinc oxide calcined 23.00
silica 20.00
red clay calcined 10.00 Please note: The analysis is adopted from another red
clay but works fine
Lithium Carbonate 2.00
Nickel Oxide 2.00 The nickel I use to test the different recipes as it shows the
contrast colors of yellow and blue.
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.362 13.28%
CaO 0.088 2.89%
MgO 0.005 0.11%
ZnO 0.497 23.66%
Li2O 0.048 0.83%
Al2O3 0.054 3.24%
SiO2 1.594 55.98%
K2O 0.009 0.49%
Na2O 0.353 12.79%
Al:Si 29.27
Expan. 10.47
ST 327.73
Or.... Bill Schran's. Bill wrote me he made them out of recipes of a well known (to
you) American potter that his name I forgot.
MFE
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1222 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
frit 3110 50.00
zinc oxide calcined 22.50
silica 22.50
Lithium Carbonate 5.00
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.254 9.14%
CaO 0.105 3.27%
ZnO 0.515 23.18%
Li2O 0.126 2.08%
Al2O3 0.034 1.92%
B2O3 0.035 1.34%
SiO2 1.776 59.07%
K2O 0.023 1.20%
Na2O 0.231 7.94%
Al:Si 52.05
Expan. 8.82
ST 336.37
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Misspelling the name of the glaze, I got my MFA....
HELEN'S CRYSTAL
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1222 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
frit 3110 49.80
zinc oxide calcined 25.00
Calcined Kaolin 1.60
silica 18.50
Lithium Carbonate 5.10
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.239 9.11%
CaO 0.099 3.26%
MgO 0.000 0.00%
ZnO 0.540 25.77%
Li2O 0.121 2.13%
Al2O3 0.044 2.64%
B2O3 0.033 1.34%
SiO2 1.582 55.72%
TiO2 0.001 0.03%
K2O 0.022 1.20%
Na2O 0.218 7.92%
Al:Si 35.73
Expan. 8.98
ST 341.82
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
About my glaze: When I planed it I had bill's recipes in front of me. I used the red clay
with the guessed analysis, because I wanted to add red iron oxide for the color.
Frit 2120 is different than 3110 it does not have B2O3, but pretty similar.
http://members4.clubphoto.com/ababi306910/981929/
http://members4.clubphoto.com/ababi306910/894659/
Some of the slides will be in both pages.
I promised you a recipe a day but wars are not making me creative. I am waiting for
pictures but it seems to me that I will get them only on Tuesday . I will write some
letters and these of you that will want to see the whole picture will not delete them
and re read my letters when I will be done.
Back to the so simple crystal glazes: BECAUSE they are so simple every little change
is a big change: sometime a critical change!
My most favorite way is Ababi's(it is me) 11
MY SECOND CRYSTAL GLAZE 11
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1222 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
frit A 2120 45.00
zinc oxide calcined 23.00
frit A 2120 20.00
red clay calcined 10.00
Lithium Carbonate 2.00
Nickel Oxide 3.00
Titanium Dioxide 2.00
Red Iron Oxide 1.00
You can see it in that page.
But what shall I do when I cannot buy frit 2120?
I made some tests with MFE and the best was
Nickel Oxide 3.00
Titanium Dioxide 2.00
Red Iron Oxide 1.00
Therefore: MFE11!
I tried to add more RIO, 2% but it was not good.
Crystal glazes can be the most beautiful but they can be the most saccharinity- it
does not matter how hard you work to achieve them! I know when I fire crystal I am
the slave of the kiln all day long - and sometimes the results... not to be written in a
proper list like ours! Yet might be saccharinity!
The "11" glaze is very special, sometimes, you hardly see the crystals looks like an
antique furniture I don't know exactly why it happens, but I love it.
End of part one
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
and also
http://www.israel-ceramics.org/membersGallery/personalpage.asp?MID=507
| |
|
