Ababi on wed 28 mar 01
About a month ago Alisa sent a recipe of white glaze that she slightly
changed.
About a week ago we had a thread "recipe or formula" I did not join it, I
think it is good to have both to get the nearest results.Here is the
original Recipe:
NEPHELINE SYENITE... 49.00 49.00%
DOLOMITE............ 25.00 25.00%
WOLLASTONITE........ 6.00 6.00%
BALL CLAY (AK)...... 20.00 20.00%
========
100.00
CaO 0.43* 12.51%
MgO 0.33* 6.92%
K2O 0.06* 2.82%
Na2O 0.19* 6.08%
TiO2 0.00 0.02%
Al2O3 0.40 21.24%
SiO2 1.59 50.11%
Fe2O3 0.00 0.28%
Si:Al 4.00
SiB:Al 4.00
Expan 8.45
I liked some of the materials I could use instead of the original ones which
I have actually, and manipulated the recipe:
WSUntitled Recipe 1
=================
WOLLASTONITE........ 20.07 20.07%
BALL CLAY (AK)...... 40.03 40.03%
MAGNESIUM CARBONATE. 10.70 10.70%
CRYOLITE............ 20.76 20.76%
QUARTZ.............. 8.45 8.45%
========
100.00
CaO 0.43* 12.60%
MgO 0.33* 6.98%
K2O 0.00* 0.16%
Na2O 0.24* 7.84%
SrO 0.00* 0.03%
TiO2 0.00 0.05%
Al2O3 0.40 21.38%
SiO2 1.59 50.44%
Fe2O3 0.01 0.52%
Si:Al 4.00
SiB:Al 4.00
Expan 8.32
The manipulating from my point of view was using Cryoilite a very surprising
material (of coarse Na2O instead of K2O)
Magnesium carbonate instead of dolomite
And, when ever I use more than 30% clay , the extra I calcin, this time I
have used it as it is.
I hoped to get some kind of crawling or almost crawling glaze. The result is
kind of waxy, glaze.you can see it in my utility page (in my humble site)
Ababi Sharon
ababisha@shoval.ardom.co.il
http://members4.clubphoto.com/ababi306910/
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