Craig Martell on sun 24 sep 00
Les wanted to know if:
>anyone have a recipe for a Cone 10 Porcelain Slip they are willing to share?
Epk Kaolin 25
Om 4 Ball clay 25
g-200 feldspar 25
silcia 25
-----------------------------------------
Grolleg kaolin 50
g-200 feldspar 25
silca 25
----------------------------------------
These slips are for wet to leather hard application. They can be brushed,
dipped, poured, sprayed. They are white bases and colorants can be added
to taste.
later, Craig Martell in Oregon
Les Crimp on sun 24 sep 00
Does anyone have a recipe for a Cone 10 Porcelain Slip they are willing =
to share?
TIA
Les Crimp in Nanoose Bay, B.C.
lcrimp@home.com
vince pitelka on mon 25 sep 00
> Does anyone have a recipe for a Cone 10 Porcelain Slip they are willing
to share?
Les -
We use this formula on all clay bodies at all temperatures. At cone 10, if
you add large amounts of iron to get medium to dark browns or black, you
should mix a separate batch and reduce the feldspar an amount approximately
equivalent to the iron addition, or else the slip will be over-fluxed and
can blister. Not a very scientific substitution, but it is what I have done
for 20 years with no complaints.
All-Temperature White Base Slip
Kaolin --------------- 34
Ball Clay ------------ 20
Potash Feldspar ---- 27
Silica ---------------- 19
Total --------------- 100
Plus: 8% Zircopax (or other zircon opacifier)
Good luck -
- Vince
Vince Pitelka
Home - vpitelka@dekalb.net
615/597-5376
Work - wpitelka@tntech.edu
615/597-6801 ext. 111, fax 615/597-6803
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
http://www.craftcenter.tntech.edu/
David Hewitt on tue 26 sep 00
If you wish, you can use the porcelain clay that you use for the body.
All the slips that I use are made this way. You can see details of this
on my web site under 'Making Slip for Decorating'.
David
In message , Les Crimp writes
>Does anyone have a recipe for a Cone 10 Porcelain Slip they are willing =
>to share?
>
>TIA
>
>Les Crimp in Nanoose Bay, B.C.
>lcrimp@home.com
>
--
David Hewitt
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
FAX:- +44 (0) 870 1617274
Web site http://www.dhpot.demon.co.uk
Bill Raymond on tue 26 sep 00
I just take the porcelain clay I'm useing and thin it down ti make my slip.
I have never had a problem with fit, beause it's the same body. Have also
used it on ^10 stoneware with no problems. Josie
-----Original Message-----
From: vince pitelka
To: CLAYART@LSV.CERAMICS.ORG
Date: Tuesday, September 26, 2000 8:18 AM
Subject: Re: Cone 10 Porcelain Slip
>> Does anyone have a recipe for a Cone 10 Porcelain Slip they are willing
>to share?
>
>Les -
>We use this formula on all clay bodies at all temperatures. At cone 10, if
>you add large amounts of iron to get medium to dark browns or black, you
>should mix a separate batch and reduce the feldspar an amount approximately
>equivalent to the iron addition, or else the slip will be over-fluxed and
>can blister. Not a very scientific substitution, but it is what I have
done
>for 20 years with no complaints.
>
>All-Temperature White Base Slip
> Kaolin --------------- 34
> Ball Clay ------------ 20
> Potash Feldspar ---- 27
> Silica ---------------- 19
> Total --------------- 100
> Plus: 8% Zircopax (or other zircon opacifier)
>
>Good luck -
>- Vince
>
>Vince Pitelka
>Home - vpitelka@dekalb.net
>615/597-5376
>Work - wpitelka@tntech.edu
>615/597-6801 ext. 111, fax 615/597-6803
>Appalachian Center for Crafts
>Tennessee Technological University
>1560 Craft Center Drive, Smithville TN 37166
>http://www.craftcenter.tntech.edu/
>
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