kathleen chase on thu 30 oct 97
Hi- I having a very difficult time locating a clear ^6 glaze with no zinc
in it. (the zinc reacts with my engobes) I have been buying a commercial
clear, but it is very costly. The original clear I was using only goes up
to ^4, at ^5 it crawls and destroys the brushwork under it.
Any recipes any one would like to share I would appreciate! TIA !
Kathy Chase kmchase@capecod.net -We still haven't had a frost yet
so the pumpkins are rotting.....
Paul Lewing on fri 31 oct 97
Kathy,
Here are a few I've had good luck with.
Lewing 5CL
Custer 26.1
Silica 25.2
EPK 14.0
Frit 3134 14.0
Whiting 10.2
Dolomite 5.6
Barium Car. 4.6
Yes, I know it has barium in it. You could probably leave it out
without too much change. But I use this glaze to make a real wide
variety of colors and have had no problems with it.
Here's another.
Lewing SC40F
Custer 22.3
Silica 22.3
Whiting 11.8
Dolomite 3.6
EPK 9.9
Frit 3134 28.0
Bentonite 2.1
I came up with this one by adding frit to cone 10 Shaner's Clear when
I switched from ^10 to ^5 years ago. If you add 40 g. frit to 100 g.
SC, this is what you come up with, hence the name SC40F. This one is
not as clear as the other one, but takes stains real well. In fact,
with an overload of stain, it will develop crystals, sometimes of a
completely different color. And you can adjust just how much crystal
you want by adding more or less silica.
I hope these help.
Paul Lewing, Seattle
Don Prey on fri 31 oct 97
Kathy,
I have used the following glaze off and on for the last year and fire in the
cone 5 to 6 range. It is a hard, clear, high gloss glaze. If you have access
to Plastic Vitrox Clay it might be worth a try. This is from an old issue of
Ceramics Monthly.
Wide Range PVC Base. cone 3 to 8
Plactic Vitrox Clay 50
Gerstley Borate 50
additions:
Zircopax 5
Rutile 5
I have used it with the additions, and copper and cobalt as colorants
Don Prey in Oregon
Greg Lamont on sat 1 nov 97
Hi Kathy,
Here's a simple one from the IMG website
20 Frit 3134
20 Wollastonite
20 EPK
20 Flint
20 Custer Feldspar
A great clear glaze.
Greg
At 12:33 PM 10/30/97 EST, you wrote:
>----------------------------Original message----------------------------
>Hi- I having a very difficult time locating a clear ^6 glaze with no zinc
>in it. (the zinc reacts with my engobes) I have been buying a commercial
>clear, but it is very costly. The original clear I was using only goes up
>to ^4, at ^5 it crawls and destroys the brushwork under it.
>Any recipes any one would like to share I would appreciate! TIA !
>Kathy Chase kmchase@capecod.net -We still haven't had a frost yet
>so the pumpkins are rotting.....
>
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