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cone 6 textured glazes

updated thu 31 oct 96

 

Levine Meg Jessica on sun 6 oct 96

A friend of mine has asked if I would post this request for him. He only
has access to an electric kiln, yet he loves the varied surfaces one might
achieve in a wood fired or heavily reduced gas kiln. He is firing to cone
6 in oxidation and is wondering if anyone has any glaze recipes which
resemble a reduced shino, or a wood-fired surface that he could fire in
oxidation. I know this is a strange request but if anyone had a very
textured cone 6 base glaze recipe, or a suggestion of a material for him
to put on as a slip, this would be a good starting point for him.
Thanks,
Meg in Boulder, Colorado where it is a gorgeous 75 degree fall day and the
trees have turned golden and it is just great outside.
PS- if you want to send recipes to me directly my new
e-mail is mlevine@dimensional.com

Janet Price on tue 8 oct 96

Meg,

A.R.T. in Chicago has an orangestone clay body that fires in oxidation
to a color that resembles reduction-fired clay. (I've found it
really only fires to about a cone 4, though, not cone 6.)
I've found several glazes for the orangestone clay that fit it
nicely (tho there may be some crazing) and others that acquire
interesting textures over it. One looks like simmering eggnog and
another crawls in a very even pattern. Since I use this clay body only
for hanging planters, this is not a problem. I have not tried making a
slip from the clay. This might be something your friend would like to
try.

I'd be interested in the experiences others have had with this clay body.

--
Janet Price, Chief Information Officer
Carroll College, Waukesha WI 53186
jprice@carroll1.cc.edu; 414-524-7120

"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez)" on wed 16 oct 96

Meg:

Two years ago I took a part-time job teaching ceramics at Navarro
College in Corsicana, Texas. The college has only one kiln. It' an ancient
Paragon High Fire. The design is square and toploading with very small
cu. ft. It's been a real challenge to develop an attractive palette of clays
and glazes for oxidation firing.

I do majolica, colored clays, and cone 6 oxidation ( cone 7 in the sitter).
I'm currently working on slips and transparent glazes for earthenware
and cone 9 crystalline to expand what I offer for my classes.

Clayart, Ceramicsweb and formerly the Ceramics Gopher have been
helpful in developing glazes for the classroom. Download the Glazebase
from Ceramicsweb. Lots of information.

The library is another great resource. Books and magazines offer plenty
of insightful information. Both editions of Zakin's Electric kiln firing are
good. The usual suspects, as for as periodicals go, also offer great
formula's: CM, Studio Potter, Ceramics Review, Pottery in Australia,
Ceramics Technical.

For a Shino try Falls Creek Shino (from Ceramicsweb or Gopher I can't
remember) :

Falls Creek Shino

Alberta Slip 56.07
Gerstley Borate 18.69
Kona F-4 Soda Spar 9.35
Silica 9.35
Lithium Carb 6.54
100.00

Superpax 9.35
Tin Ox 4.67

A wood-fired surface is another story. I'm not sure it's possible to
simulate the wood ash texture in oxidation. The best results I've
achieved are from the following:

VC Rivulet

Ball Clay 27
Whiting 27
Barium Carb 14
Dolomite 14
Flint 9
Frit 3195 9
100

Golden Fake Ash

Redart 27
Dolomite 24
Barium Carb 12
Ball Clay 20
Lithium Carb 2
Gerstley Borate 10
Bone Ash 5
100

Bush "Fake Ash"

Barnard Clay 20
Ball Clay 26
Wollastonite 30
Gerstley Borate 24
100

Rutile 1

These are nice sufaces, but if you want Richard Aerni-like wood ash
texture again I'm not sure it's possible. Good luck!

Rafael Molina
Rmr3431@dcccd.edu



>>> Levine Meg Jessica 10/06/96 09:00pm
>>>
----------------------------Original message----------------------------
A friend of mine has asked if I would post this request for him. He only
has access to an electric kiln, yet he loves the varied surfaces one might
achieve in a wood fired or heavily reduced gas kiln. He is firing to cone
6 in oxidation and is wondering if anyone has any glaze recipes which
resemble a reduced shino, or a wood-fired surface that he could fire in
oxidation. I know this is a strange request but if anyone had a very
textured cone 6 base glaze recipe, or a suggestion of a material for him
to put on as a slip, this would be a good starting point for him.
Thanks,
Meg in Boulder, Colorado where it is a gorgeous 75 degree fall day and
the
trees have turned golden and it is just great outside.
PS- if you want to send recipes to me directly my new
e-mail is mlevine@dimensional.com