Jon Pacini on thu 14 feb 02
Greetings All-------Laguna's stock and trade is Special Clay bodies, we
currently produce over 2000 special formulas for potters in addition to our
140 stock bodies.
Whom ever is going to develop this project please contact me directly.
Jon Pacini
Clay Manager
Laguna Clay Co
Jonathan Pennington on thu 14 feb 02
Hrm.. it would appear that Clayart and the Potter's Council are
beginning to get noticed. :-)
* Jon Pacini [020214 13:55]:
> Greetings All-------Laguna's stock and trade is Special Clay bodies, we
> currently produce over 2000 special formulas for potters in addition to our
> 140 stock bodies.
> Whom ever is going to develop this project please contact me directly.
> Jon Pacini
> Clay Manager
> Laguna Clay Co
--
Jonathan Pennington | jwpennin@bellsouth.net
"There are no pots, there is only clay." -original
"It's hard to take life too seriously
when you realize yours is a joke." -also original
Ababi on fri 15 feb 02
May we get the formula& recipe for these claybodys?
Ababi Sharon
Kibbutz Shoval- Israel
Glaze addict
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
http://www.israelceramics.org/
Cindy Strnad on mon 18 feb 02
Dear Gavin,
I suspect that no one has stepped forward with suggestions because many of us
don't have a clue when it comes to formulating a clay body. Myself, I need clay
bodies for kindergartners. I try to understand the books written for grown-ups
and I choke. I would really love to learn more about this, but there don't seem
to be any useful books in the children's section of my library. What sort of
things should one put in a cone 6 stoneware body? If you or some other
knowledgeable person would be willing to post a recipe or two and indicate the
ingredients we might want to tinker with, I and other interested persons can
order supplies and get started.
Getting the supplies can be a problem for me, here, unless I need to order a
whole palette. I do have a friend traveling next week who could pick up a few
things for me if I knew by then what to ask for. Any suggestions?
Thanks!
=====================================
Cindy Strnad
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
USA
cindy@earthen-vessels-pottery.com
http://www.earthen-vessels-pottery.com
CM Critique discussion forum
http://www.earthen-vessels-pottery.com\toforum.html
Greg Lamont on tue 19 feb 02
Cindy, et al,
Just to provide some grist for the mill here's what I did, with advice from
Ron Roy and Johnathan Kaplan, to get a cone 9-10 stoneware body (used at
Iowa State University) to work at cone 6. It is a somewhat fussy recipe,
but it seems to work fine. I'll give the original recipe followed by the
adapation, with analysis provided by GlazeChem v. 1.2:
ISU Dark Stoneware (Cone 9-10)
38 GoldArt clay
38 Hawthorne Bond clay
38 Kentucky OM #4 clay
7 Silica (190M)
7 Silica (325M)
7 Kyanite (100M)
7 Fireclay grog (35M)
7 Redart clay
------
149 (lbs.)
Analysis:
Na2O 0.13 Al2O3 12.36 SiO2 43.77
K2O 0.45 P2O5 0.00
MgO 0.33 TiO2 0.63
CaO 0.09 Fe2O3 0.40
Alumina:Silica ratio is 1.00:3.54
Neutral:Acid ratio is 1.00:3.63
Alk:Neut:Acid ratio is 1.00:12.36:44.80
Expansion: 50.4 x 10e-7 per degree C
Now, the adaptation:
Cone 6 Stoneware Body
20 Goldart clay
40 Hawthorne Bond clay
30 Kentucky OM-4 clay
15 Redart clay
15 Flint (190M)
23 Custer feldspar
7 Pyrophyllite
------
150 (lbs.)
Analysis:
Na2O 0.21 Al2O3 4.89 SiO2 21.44
K2O 0.56 P2O5 0.00
MgO 0.17 TiO2 0.23
CaO 0.06 Fe2O3 0.21
Alumina:Silica ratio is 1.00:4.38
Neutral:Acid ratio is 1.00:4.47
Alk:Neut:Acid ratio is 1.00:4.89:21.88
Expansion: 55.8 x 10e-7 per degree C
As indicated above, the main change was the reduction in the amount of clay
and an increase in fluxing materials to allow the clay body to vitrify at
the lower temperature.
Testing and comment is encouraged.
Greg
-----Original Message-----
From: Cindy Strnad
To: CLAYART@LSV.CERAMICS.ORG
Date: Monday, February 18, 2002 3:24 PM
Subject: Clayart Clay Bodies
>Dear Gavin,
>
>I suspect that no one has stepped forward with suggestions because many of
us
>don't have a clue when it comes to formulating a clay body. Myself, I need
clay
>bodies for kindergartners. I try to understand the books written for
grown-ups
>and I choke. I would really love to learn more about this, but there don't
seem
>to be any useful books in the children's section of my library. What sort
of
>things should one put in a cone 6 stoneware body? If you or some other
>knowledgeable person would be willing to post a recipe or two and indicate
the
>ingredients we might want to tinker with, I and other interested persons
can
>order supplies and get started.
>
>Getting the supplies can be a problem for me, here, unless I need to order
a
>whole palette. I do have a friend traveling next week who could pick up a
few
>things for me if I knew by then what to ask for. Any suggestions?
>
>Thanks!
>
>=====================================
>Cindy Strnad
>Earthen Vessels Pottery
>RR 1, Box 51
>Custer, SD 57730
>USA
>cindy@earthen-vessels-pottery.com
>http://www.earthen-vessels-pottery.com
>CM Critique discussion forum
>http://www.earthen-vessels-pottery.com\toforum.html
>
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