Jennifer Boyer on fri 7 may 10
HI all,
I'm using a cone 10 clay that has a low expansion and firing in a gas kiln
without reduction. I've been using Anderson Ranch Red for iron a kaki red
glaze but the expansion is too high for my clay and I'm getting hidden
crazing that is making thermal shock and cracking problems.
Does anyone have a kaki (iron) red glaze recipe for cone 10 that is low
expansion? My usual glaze is 64 in Glazemaster. I don't have these problems
with that glaze.
I'm going to try the Bailey Red in John Britt's book since this looks like =
a
better expansion but it hasn't given me as vivid a red in the past.
Jennifer, wishing we could add a Hassle Factor Fee to each pot!
Randall Moody on fri 7 may 10
On Fri, May 7, 2010 at 7:11 AM, Jennifer Boyer wrote:
> HI all,
> I'm using a cone 10 clay that has a low expansion and firing in a gas kil=
n
> without reduction. I've been using Anderson Ranch Red for iron a kaki r=
ed
> glaze but the expansion is too high for my clay and I'm getting hidden
> crazing that is making thermal shock and cracking problems.
>
> Does anyone have a kaki (iron) red glaze recipe for cone 10 that is low
> expansion? My usual glaze is 64 in Glazemaster. I don't have these proble=
ms
> with that glaze.
>
> I'm going to try the Bailey Red in John Britt's book since this looks lik=
e
> a
> better expansion but it hasn't given me as vivid a red in the past.
> Jennifer, wishing we could add a Hassle Factor Fee to each pot!
>
The Arts Center I work at has very good luck with Bailey's Red from Mr.
Britt's book. It looks best on a body with a good iron content. It tends to
be brown on porcelain.
--
Randall in Atlanta
http://wrandallmoody.com/home.html
Lee Love on fri 7 may 10
I posted this here in 1995. It is a true Mashiko Kaki,
indistingushable from the real think made with Ashinuma stone. I use
it over L.G. Clear and resist.
Glaze Name: Mashiko Synthetic AK5
Cone: 10
Color:
Testing: tested
Surface: ?
Firing Type: Ox. or Red.
Glaze Type:
Date: 7/19/95
Ingredients % Amounts
OM-4 Ball clay 12.31
Calcined kaolin 12.10
Kona F-4 Feldspar 33.62
Bone Ash 0.53
Talc 5.57
Wollastonite 6.96
Silica 28.91
Total: 100.00 %
Also add: (colorants, etc.)
Titanium Dioxide 0.53
Manganese Dioxide 0.21
Red Iron Oxide, Spanish 6.85
Estimated Thermal Expansion: 60.06 x10-7
Silica/Alumina ratio: 7.9:1
Unity Molecular Formula:
0.102 K2O 0.852 Al2O3 6.773 SiO2
0.199 Na2O 0.006 Fe2O3 0.023 TiO2
0.443 CaO 0.011 P2O5
0.256 MgO
Percentage Analysis:
73.28 % SiO2
15.65 % Al2O3
1.73 % K2O
2.22 % Na2O
4.47 % CaO
1.86 % MgO
0.17 % Fe2O3
0.28 % P2O5
0.33 % TiO2
--
Lee, a Mashiko potter in Minneapolis
http://mashikopots.blogspot.com/
=3D93Observe the wonders as they occur around you. Don't claim them. Feel
the artistry moving through and be silent.=3D94 --Rumi
William & Susan Schran User on fri 7 may 10
On 5/7/10 7:11 AM, "Jennifer Boyer" wrote:
> HI all,
> I'm using a cone 10 clay that has a low expansion and firing in a gas kil=
n
> without reduction. I've been using Anderson Ranch Red for iron a kaki r=
ed
> glaze but the expansion is too high for my clay and I'm getting hidden
> crazing that is making thermal shock and cracking problems.
>
> Does anyone have a kaki (iron) red glaze recipe for cone 10 that is low
> expansion? My usual glaze is 64 in Glazemaster. I don't have these proble=
ms
> with that glaze.
Check my web site (below) for ^10 reduction glazes.
There is a Ohata Kaki listed that fit many of the different bodies my
students used.
Bill
--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Jennifer Boyer on sat 8 may 10
This comes from HIgh Fire Glazes by John Britt, a book that is very worth
owning:
Bailey's Red cone 10
Custer Feldspar 47
Flint 13
Kaolin 13
Talc 10.5
Bone Ash 14
Lithium Carbonate 2.5
RIO 8
And thanks to those who shared recipes with me. I've got tests going into
next week's firing!
Jennifer
On Fri, May 7, 2010 at 5:55 PM, mudduck wrote:
> Jennifer
>
> Would you mind sharing the Anderson red with me?? I've been using the
> bailey but as you said I'm not getting a good red. If you get any others
> that show interest I wouldn't mind trying them also.
>
>
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