Oni Ita / Nezumi Shino

[James C. Kroll]

Dear Group,

I have spent about 2 years trying to develop a Nezumi shino. My
research has yeilded experiments with various Gusu recipes etc. These
turned out to be too blue and are from a later time period in the area
anyways. I think from my research it (Oni Ita - "Devil board") is a
high iron bearing clay slip painted on the pot prior to glazing.
Nezumi shino results when a base shino interacts with the under lying
slip. I have also heard using Alberta slip as a base would work. I've
recently tried a slip of Alberta put on wet ware then bisqued but not
the look I wanted. I am going to try an alberta slip on bisque ware
next. Does anyone have a recipe for Oni Ita - "Devil Board"? I can't
find any thing but vague references in books, online ect. Also I am a
Shino Junky If you have any shino recipes your willing to share I've
tried about 15-20 so far. My favorite shino potter is Suzuki Tomio.
Thank you all for your time.

Gassho,
J. Cody Kroll

www.codykroll.com
http://www.etsy.com/shop/Kumagama
--
A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly... Specialization is for insects. ~ Robert
A. Heinlein 1907 - 1988

[Lee]

John Baymore, in his research in Japan, was told by Japanese potters, that the nezumi comes from a small amount of cobalt in an iron slip.   I have used his slip recipe below under Wirt/Minnesota type shinos with good success:

EPK 25 
OM4 25 
G200 (I used Custer) 
Feldsp 20 
Flint 20 
Borax 5 
Zircopax 5 

9% RIOx 
.25% Cobalt carb.  

--
 Lee 李 Love in Minneapolis
http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "The land of eternal youth is behind the house, a beautiful land fluent within itself." -- John O'Donohue

[rickma...@comcast.net]

Lee, what is the Feldsp?  Is it feldspar?  if so which one?

 

Thanks,

Rick

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[James C. Kroll]

I COULD KISS YOU! Thank you so much! Do you apply to bisque ware, green ware, or wet work?
Cody

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[Hank Murrow]

On Feb 13, 2012, at 7:47 AM, James C. Kroll wrote:

Dear Group,

I have spent about 2 years trying to develop a Nezumi shino. 

Fire in oxidation with an iron(& possibly Manganese) slip under. My Shino is yours to try, just keep the name: Hank's Shino. It was published in the Sep/Oct 2001 issue of Ceramics Monthly, "Shinos in the Fire___ an Odyssey".

Glaze name: Hank's Shino

Cone: 10_11+

Color: White where thick/Red where thin

Surface texture: Very soft and fat w. crawl

Firing: Reduction, and early… C012

Glaze type:  Na Li Al Matt

Recipe: Percent Batch/Lb

Nepheline Syenite      55.40 22.16

Spodumene Low Melt    18.00  7.20

McNamee kaolin             26.00 10.40

Totals:   100.00 % 40.00 lb

Also add:

VeeGum T     1.50  0.60 lb

Comments: This is better than my original  Shino! Try with  a K/Fe/Mn slip under. Try with very thin slip under with scraffito. Fill in incised lines with the glaze, sponge off, dry, and glaze overall. Early sintering due to the Li calls for early reduction(C/012). After the fire, I've been holding the kiln steady in oxidation at 1900F for 3 to 8 hours during cooling with great bloody iron color the result! Also tried in twelve Anagama fires so far, where it turned toward pinkish/coral color with iridescence, and greened up where ash deposit was heavy. Crawls strongly if fired soon after glazing, less so if allowed to dry a couple days before loading. Low Melt Spodumene from Tanco through Georgies in Portland, OR may be critical. Also available @ Georgies is McNamee kaolin, a Georgia clay which has a lovely blush of color in the wood fire due to some Titania which seems beneficial in Shinos. However, you can sub 6-Tile kaolin instead. The Low-melt Spodumene is mined in Canada, and has some amblygonite in it, and thus P2O5. Aside: I have a glaze which is 50% bone ash!!!

Unity Formula for Hank's Shino-McNamee: 3.3:1 Si:Al Ratio!

0.159 K2O 1.593 Al2O3 5.246 SiO2 

0.534 Na2O 0.006 Fe2O3 0.023 TiO2 

0.041 CaO 0.000 MnO2 0.067 P2O5

0.010 MgO

0.256 Li2O

0.101 F  !   

Platter, 17" diameter, Hank's Shino over Willamette Yellow clay body, Reduction to C11 with soak in Ox around 1900F.

Cheers, Hank

[Lee Love]

The recipe says g200 but I used Custer      .     I used it in japan with generic materials.  

--

 Lee Love in Minneapolis

http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "The

land of eternal youth is behind the house, a beautiful land fluent

within itself." -- John O'Donohue --sent from my iPod

[Lee Love]

I put it on leather hard.    But I would test all ways.    

--

 Lee Love in Minneapolis

http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "The

land of eternal youth is behind the house, a beautiful land fluent

within itself." -- John O'Donohue --sent from my iPod

[James C. Kroll]

Lee,

Do you apply to bisque ware, green ware, or wet ware?
Cody

On Feb 13, 2012 12:19 PM, "Lee Love" <tog...@gmail.com> wrote:

The recipe says g200 but I used Custer      .     I used it in japan with generic materials.  

--

 Lee Love in Minneapolis

http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "...

within itself." -- John O'Donohue --sent from my iPod

On Feb 13, 2012, at 11:03 AM, rickma...@comcast.net wrote:

> Lee, what is the Feldsp?  Is it f...

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Photo log at: http://claycraft.blogspot.com/

You can still send photos to the CLayCraft blog. A...

[James C. Kroll]

Oops. Just saw your reply.

On Feb 13, 2012 12:20 PM, "Lee Love" <tog...@gmail.com> wrote:

I put it on leather hard.    But I would test all ways.    

--

 Lee Love in Minneapolis

http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "...

within itself." -- John O'Donohue --sent from my iPod

On Feb 13, 2012, at 11:03 AM, "James C. Kroll" <cody...@gmail.com> wrote:

> I COULD KISS YOU! Thank you so much! Do you apply to bisque ware, green ware, or wet work?

> Cody...

> You can still send photos to the CLayCraft blog. Ask me for the address.

> To unsubscribe send ema...

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You can still send photos to the CLayCraft blog. Ask me for the address.

To unsubscribe send email t...

[James C. Kroll]

Are you bisquing after application then glazing or are you single firing?

Cody

On Feb 13, 2012 12:20 PM, "Lee Love" <tog...@gmail.com> wrote:

I put it on leather hard.    But I would test all ways.    

--

 Lee Love in Minneapolis

http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "...

within itself." -- John O'Donohue --sent from my iPod

On Feb 13, 2012, at 11:03 AM, "James C. Kroll" <cody...@gmail.com> wrote:

> I COULD KISS YOU! Thank you so much! Do you apply to bisque ware, green ware, or wet work?

> Cody...

> You can still send photos to the CLayCraft blog. Ask me for the address.

> To unsubscribe send ema...

--
Photo log at: http://claycraft.blogspot.com/

You can still send photos to the CLayCraft blog. Ask me for the address.

To unsubscribe send email t...

[Mike]

Hi James,

As it so happens, Oni-ita is something most potters in Karatsu use as the pigment for their iron brushwork, as well as an iron source for glazes. I personally don't use the stuff so am not very knowledgeable about the details, but do you know the thick veins (layers) of leeched/settled iron you often see above or below clay and sandstone seams? That's Oni-ita. It is basically a source of iron oxide containing clay. From what I've seen, it falls somewhere between Oudo (yellow ochre) and Benigara in iron content. It probably also contains other sorts of impurities, but I can't say with any sort of authority.

You might end up with something similar by starting with yellow ochre and adding RIO to it, plus maybe a tiny bit of cobalt and/or manganese.

Happy testing!

Mike

Mike
in Taku, Japan

http://karatsupots.com
http://karatsupots.blogspot.com

Workshop in Taku 2012: The Simple Teabowl,  May 12 - 18

http://karatsupots.com/workshop2012/2012home.html

http://workshopintaku2012.blogspot.com/

[L BURCH]

OK guys I've used this glaze (John Baymore) over the past year or so. I got it as Black Shino Slip (BSS).  I use it under Wirts. When I have time I will post several line blends in which the Iron/cobalt %ages are changed. At the moment, one of my favorite glazing techniques is to glaze a tea bowl with BSS and place it in wood firing (Kusakabe kiln).  Will post a couple of pics of those too.  Will take a couple of days so hang in there.

At 09:19 AM 2/13/2012, you wrote:

The recipe says g200 but I used Custer      .     I used it in japan with generic materials. 

--
 Lee Love in Minneapolis
http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is is, "The

land of eternal youth is behind the house, a beautiful land fluent
within itself." -- John O'Donohue --sent from my iPod

On Feb 13, 2012, at 11:03 AM, rickma...@comcast.net wrote:

Lee, what is the Feldsp?  Is it feldspar?  if so which one?

 

Thanks,

Rick

---

From: "Lee" <tog...@gmail.com>
To: clay...@googlegroups.com
Sent: Monday, February 13, 2012 8:06:29 AM
Subject: Re: *ClayCraft* Oni Ita / Nezumi Shino

John Baymore, in his research in Japan, was told by Japanese potters, that the nezumi comes from a small amount of cobalt in an iron slip.   I have used his slip recipe below under Wirt/Minnesota type shinos with good success:



EPK 25
OM4 25
G200 (I used Custer)
Feldsp 20
Flint 20
Borax 5
Zircopax 5

9% RIOx
.25% Cobalt carb. 


--

 Lee æ Ž Love in Minneapolis
http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "The land of of eternal youth is behind the house, a beautiful land fluent within itself." -- John O'Donohue

--
Photo log at: http://claycraft.blogspot.com/
You can still send photos to the CLayCraft blog. Ask me for the address.
To unsubscribe send email to Claycraft-...@googlegroups.com

--
Photo log at: http://claycraft.blogspot.com/
You can still send photos to the CLayCraft blog. Ask me for the address.
To unsubscribe send email to Claycraft-...@googlegroups.com

[L BURCH]

Just finished my web site with John Baymore line blends done recently. The address is : http://home.earthlink.net/~burchl/


At 08:06 AM 2/13/2012, you wrote:

John Baymore, in his research in Japan, was told by Japanese potters, that the nezumi comes from a small amount of cobalt in an iron slip.   I have used his slip recipe below under Wirt/Minnesota type shinos with good success:



EPK 25Â
OM4 25Â
G200 (I used Custer)Â
Feldsp 20Â
Flint 20Â
Borax 5Â
Zircopax 5Â

9% RIOxÂ
.25% Cobalt carb. Â


--
 Lee æ Ž Love in Minneapolis
http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "The land of eternal youth is behinnd the house, a beautiful land fluent within itself." -- John O'Donohue

[James C. Kroll]

This is awesome! I will do some testing on a few pieces and post the results. Thank you very much. You are all so very generously open with your knowledge, I bow to your Buddha natures.

Cody Kroll

www.codykroll.com

> You can still send photos to the CLayCraft...

--
Photo log at: http://claycraft.blogspot.com/

You can still send photos to the CLayCraft blog. ...

[Lee]

I believe oxidation is required for tye grey/blue/nezumi. Were your
last two pots in oxidation?

Most of a Mino kiln load was fired in oxidation. There were only
spots that recieved reduction atmosphere.

--
--
 Lee 李 Love in Minneapolis
http://mingeisota.blogspot.com/

 "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéile"—that is, "The
land of eternal youth is behind the house, a beautiful land fluent

[L BURCH]

No, I mostly do reduction

At 12:35 PM 2/18/2012, you wrote:
>I believe oxidation is required for tye grey/blue/nezumi. Were your
>last two pots in oxidation?
>
>Most of a Mino kiln load was fired in oxidation. There were only
>spots that recieved reduction atmosphere.
>
>On Sat, Feb 18, 2012 at 2:14 PM, L BURCH <bur...@earthlink.net> wrote:
> > Just finished my web site with John Baymore line blends done recently. The
> > address is : http://home.earthlink.net/~burchl/
> >
> >
> > At 08:06 AM 2/13/2012, you wrote:
> >
> > John Baymore, in his research in Japan, was told by Japanese potters, that

> > the nezumi comes from a small amount of cobalt in an iron slip.  I have

> > used his slip recipe below under Wirt/Minnesota type shinos with good
> > success:
> >
> >
> >

> > EPK 25Â
> > OM4 25Â
> > G200 (I used Custer)Â
> > Feldsp 20Â
> > Flint 20Â
> > Borax 5Â
> > Zircopax 5Â
> >
> > 9% RIOxÂ
> > .25% Cobalt carb. Â
> >
> >
> > --
> > Â Lee æ Ž Love in Minneapolis
> > http://mingeisota.blogspot.com/
> >
> > Â "Ta tIr na n-óg ar chul an tI—tIr
> dlainn trina chéile"—that is, "The

> > land of eternal youth is behinnd the house, a beautiful land fluent within
> > itself." -- John O'Donohue
> >
> >
> > --
> > Photo log at: http://claycraft.blogspot.com/
> > You can still send photos to the CLayCraft blog. Ask me for the address.
> > To unsubscribe send email to Claycraft-...@googlegroups.com
> >
> > --
> > Photo log at: http://claycraft.blogspot.com/
> > You can still send photos to the CLayCraft blog. Ask me for the address.
> > To unsubscribe send email to Claycraft-...@googlegroups.com
>
>
>
>--
>--
>Â Lee æ Ž Love in Minneapolis
>http://mingeisota.blogspot.com/
>

> "Ta tIr na n-óg ar chul an tI—tIr dlainn trina chéiile"—that is, "The

>land of eternal youth is behind the house, a beautiful land fluent
>within itself." -- John O'Donohue
>