Earl Brunner on sat 20 may 06
Ah, if only it were that simple. You can adjust a
recipe down like that, but huge odds that it just won't
look or act the same.
You say moving down from cone 10 to 6, is that cone 10
electric to cone 6 electric, or cone 10 fuel fired to
cone 6 fuel fired, or from fuel to electric or what?
That would have a bearing on the situation as well.
Earl Brunner
Las Vegas, NV
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On
Behalf Of candy murguia
Sent: Saturday, May 20, 2006 8:52 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Changing cones
I want to move to firing at cone 6 from cone 10,
however most of the glazes
I have come to love fire at cone 10. Is there a glaze
calculation software
that wil do this for me, or how do I adjust my recipes
down to cone 6. I
know the basic, I need to add more flux, but do I just
have to do line
blends with more flux or is there a formula I can use.
Candy
candy murguia on sat 20 may 06
I want to move to firing at cone 6 from cone 10, however most of the glazes
I have come to love fire at cone 10. Is there a glaze calculation software
that wil do this for me, or how do I adjust my recipes down to cone 6. I
know the basic, I need to add more flux, but do I just have to do line
blends with more flux or is there a formula I can use.
Candy
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Steve Slatin on sun 21 may 06
Candy --
There're lots of thoughts on this -- all of them
are at best crude approximations that will only
get you into the range.
Tony Hansen somewhere suggests reducing your
silica and alumina to 2/3 of what they are in the
^10 recipe, and making up the difference with a
boron frit. IIRC, he also suggests adding
equivalent quantities to the boron in the frit
back in as silica and alumina.
Cushing's Handbook suggests you can get from ^9
to ^6 in many cases by subbing nepheline syenite
or Kona F-4 for a higher-melting feldspar. The
handbook also suggsts adding Gerstley Borate in a
line blend of up to 30% in addition to your
otherwise fixed recipe. If neither of these
work, it suggests trying line blends of your
existing recipe with 10 - 30 percent additional
of frit 3124, 3134, or a few others I can't
remember.
But probably a better thing to do is to start
with an existing glaze recipe for ^6 in the
general style you want -- a glossy clear alkaline
rich-glaze, or satiny opaque calcium-rich glaze,
or whatever -- and then add the same % of
colorants that you used for that type of base in
^10 that you liked, and you may have something
pretty close to what you're looking for.
Steve Slatin --
The angel lay in a little thicket. It had no need of love; there was nothing anywhere in the world could startle it ...
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Judy Rohrbaugh on mon 22 may 06
Candy,
Are you talking about going from cone 10 in an electric (oxidation)
to cone 6 (oxidation?)
I went from cone 9 all the way down to cone 6-5, then 4, years back,
and my glazes were all close to the same at cone 6 as they were at 9.
You probably won't want to do it this way, but I went down one or
two cones at a time- because my kiln was firing lower and lower (sigh).
I wanted to go lower, and the kiln just sort of pushed me.
I don't remember specifics, just wanted to tell you that it can be done.
I now have a bit of neph syenite and gerstley borate substitutes in my glazes.
Judy Rohrbaugh
Fine Art Stoneware
Ohio
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Eleanora Eden on tue 23 may 06
Hi Candy and all,
I would consider this a golden opportunity to get a glaze calculation program
and learn to love it.
When I decided last year to try to work at c 1 I bought Insight and it has been
a real romance.....some ups and downs but a constant delight of new challenges
and amazing discoveries.
There is also Glaze Master which many clayarters prefer. You can download
free 30 day trials of these, or Matrix, or others as well.
I bless the day I took this plunge.
Eleanora
>I want to move to firing at cone 6 from cone 10, however most of the glazes
>I have come to love fire at cone 10. Is there a glaze calculation software
>that wil do this for me, or how do I adjust my recipes down to cone 6. I
>know the basic, I need to add more flux, but do I just have to do line
>blends with more flux or is there a formula I can use.
>
>Candy
--
Bellows Falls Vermont
www.eleanoraeden.com
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