Lili Krakowski on sun 4 mar 12
Goody. When I sent this a bit earlier it was rejected by =3D
ListServe....Do not understand why, thought they said..Something about =3D
it sounding like a command. Good grief! I never "command". I say =3D
"please even to Cannonball!
But. Ok.
Thanks to Glaze Master (TM) here goes:
13 Feldspar--Custer
16 Whiting
6 Frit--Ferro 3249
6 Frit--Ferro 3124
4 Frit--Ferro 3195
12 frit cc250
29 Silica
12 Kaolin--EPK
2 Bentonite
.103 Na2O
.075 K2O
.073 MgO
.749 CaO
1.000 Total
.336 Al2O3
.272 B2O3
.005 Fe2O3
3.422 SiO2
10.2 Ratio
66.5 Exp
This glaze seems to have read "Horrible Glazes and How They Grew" ...and =
=3D
been following its advice.
First it clonks to the bottom of the bucket to sulk, and then turns to =3D
jelly. (Very childish behavior!)
Truth to tell, I've never encountered that combo.
But. I think there is too little plastic material in that glaze. And the =
=3D
very fine uniform grind of the frits may be adding to the problem. I =3D
always have been told that the ideal glaze not only has a diversity of =3D
materials, in different "finenesses" . Hard to achieve these days of =3D
prefab everything. Could the jellification be caused by one of the =3D
commercial additives? I seem to remember reading that an excess of =3D
deflocculants can cause weird counter-productive effects. Maybe that is =3D
what caused the jellification?
As to other additives. I do not know the commercial ones, and do not =3D
like Epsom salts...but do add a little-bit-at-a-time calcium chloride.
I would up the Bentonite to 3 even 4, replacing some clay if necessary, =3D
and use Ball Clay instead of Kaolin. I certainly would try the distilled =
=3D
water route...
However. I am with those who said WHY are you struggling with this glaze =
=3D
since there are many good clears around?
Here is one, from ClayArt:
52.4 Feldspar--Custer
13.8 Frit--Ferro 3249
22.8 Wollastonite
8 Bentonite
3 Dolomite
.084 Na2O
.158 K2O
.197 MgO
.56 CaO
.353 Al2O3
.16 B2O3
2.715 SiO2
I do not know the source, but is is a recalculation of a Soft & Shiny =3D
glaze using GB. And the only magnesium containing transparent I have on =3D
my list.
Here is my BB Clear:
69 Frit--Ferro 3124
7.2 Ball Clay--Old Mine #4
21.6 Flint
2.2 Bentonite
.269 Na2O
.023 K2O
.008 MgO
.7 CaO
.343 Al2O3
.512 B2O3
3.997 SiO2
67.1 Exp
Again....all Calculations by GlazeMasterT
Good luck.
Lili Krakowski
Be of good courage
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