Patti Kratzke on mon 1 oct 01
Here's one I and a number of other fellow students have used in the past.
It's a ^10, and it's called Oribe Green, but when people see it they
call it Celadone. Don't know if it will give you a classic Sung Dynasty
look, but it's drawn a few "oohs" and "ahs." The recipe was given to me
in a 500-base, so I did the math to total 100, thus the 0.0x increments.
Here's the base:
Bone ash 1.05
Talc 7.81
Whiting 22.36
Custer Feldspar 30.91
EPK Kaolin 12.55
Silica (Flint) 25.32
For the celadon green, add Copper Carbonate, 5.5%
I found that if you dip the piece into the glaze, it comes out celadon.
But if you spray it on, it comes out greyish-white with green flecks on
the flatter horizontal surfaces. Kinda cool. I have also used this base
(without the Copper Carbonate, of course) and added cobalt carbonate 0.5%
and rutile 3% to make an Oribe Blue. It comes out kind of looking like
faded denim. (I think alternatively you could use cobalt carbonate 0.5%
and chrome dioxide 1% to get blue, also, but don't take that as gospel.
It's just in my notes. But the first blue variation I have actually
tested).
I also found a couple of web resources, one of which includes recent
postings from Clayart. That one is
http://www.potters.org/category183.htm. Then also take a look at
http://www2.tamucc.edu/~dvpa/artsite/studio/ceramics/classglaze.html.
This second one includes discussions about Oribe glazes and variations.
The Clayart site looks like it includes a number of other celadon recipes
and discussions. Good luck!
On Mon, 1 Oct 2001 18:56:30 -0400 "Mike M."
writes:
> Hey, I need glaze formulations for green celadons. Preferably
> tested
> ones. And any tips or info anyone might have about celadons. I'm
> trying
> to get a classic Sung Dynasty look. Thanks.
>
>
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Patti Kratzke
Kingston, WA
pkpotts@juno.com
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Mike M. on mon 1 oct 01
Hey, I need glaze formulations for green celadons. Preferably tested
ones. And any tips or info anyone might have about celadons. I'm trying
to get a classic Sung Dynasty look. Thanks.
Pat Colyar on tue 2 oct 01
But Patti, by definition, this isn't a celadon. a nice glaze, but
not a celadon.
Pat Colyar, in gorgeous Gold Bar, WA
Paul Taylor on tue 2 oct 01
Dear MIke
I have been trying for thirty years.
1%iron in any clear reduced glaze will give you as near as any. Will tell
you if I crack it .I am nearly there.
See my webbsite for a recipe and what it looks like.
I'm off to Paris in the morning for a week whoopy!!!!!!
Regards from Paul Taylor
http://www.anu.ie/westportpottery
Alchemy is the proof that economics is not a science.
> From: "Mike M."
> Reply-To: Ceramic Arts Discussion List
> Date: Mon, 1 Oct 2001 18:56:30 -0400
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: Celadon Glazes
>
> Hey, I need glaze formulations for green celadons. Preferably tested
> ones. And any tips or info anyone might have about celadons. I'm trying
> to get a classic Sung Dynasty look. Thanks.
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
Anne Webb on wed 7 mar 07
I was wondering if someone could recommend a celadon that I could play
around with and test. (Trying to find one that doesnt craze a lot that maybe
I can tweak to suit my claybody).
Prolly going to test it on Standard's grolleg porcelain or maybe even
Standard's 181 with molochite at ^10.
Any recommendations?
Feel free to contact me off list if that works better. My other email is
webbpottery@gulftel.com
Thanks.
Anne
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Craig Martell on wed 7 mar 07
Anne was wondering:
>if someone could recommend a celadon that I could play around with and test.
Hello Anne:
Don't be playing around with celadon glazes. This is serious business. 8>)
I have no idea what kind of celadon you want but here's a Yingqing celadon
that I converted to available materials. I took the percentage analysis
from Nigel Wood's book, Chinese Glazes and the version I've done matches
his analysis. This is a high limestone blue celadon.
Apply the glaze very thick for color.
Yingqing #3 cone 10R
Nepheline Syenite 22.70%
Whiting 23.22%
Grolleg Kaolin 18.41%
Silica 35.67%
Black Iron Oxide 0.75%
If this glaze doesn't fit your clays you can add some silica until it
does. It fits both porcelain bodies that I use.
regards, Craig Martell Hopewell, Oregon
Chris Trabka on thu 8 mar 07
Anne,
John Britt's new book has a lot of information on celedon glazes.
The best way to get one to "fit" your clay is by using glaze analysis
software. With the glaze analysis software find the coefficient of
expansion for a glaze that "works" with your clay. Then compare the
coefficient of expansion for the "new" celedon glaze. If you have to adjust
the celedon some testing may be required to get the correct color.
I have found that about 1% yellow iron oxide in a clear cone 10 glaze will
make a reasonable celedon.
Chris
>I was wondering if someone could recommend a celadon that I could play
>around with and test. (Trying to find one that doesnt craze a lot that
maybe
>I can tweak to suit my claybody).
>Prolly going to test it on Standard's grolleg porcelain or maybe even
>Standard's 181 with molochite at ^10.
>
>Any recommendations?
>
>Feel free to contact me off list if that works better. My other email is
>webbpottery@gulftel.com
>
>Thanks.
>Anne
Gail Dapogny on thu 8 mar 07
There was an article in Clay Times (I think it was CT) 5 -6 years
back by Pete Pinnell on Celadons that was really interesting and
informative, even clarifying color differences -- bluish vs greenish,
etc. If anyone knows the issue, or is organized enough to find it,
it's well worth reading and keeping. Also, Craig Martell has had
interesting information on his beautiful celadons.
Gail Dapogny in Ann Arbor
On Mar 8, 2007, at 8:20 AM, Chris Trabka wrote:
> Anne,
>
> John Britt's new book has a lot of information on celedon glazes.
>
> The best way to get one to "fit" your clay is by using glaze analysis
> software. With the glaze analysis software find the coefficient of
> expansion for a glaze that "works" with your clay. Then compare the
> coefficient of expansion for the "new" celedon glaze. If you have
> to adjust
> the celedon some testing may be required to get the correct color.
>
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