Les Crimp on wed 20 sep 00
Hi All -=20
A while back one of you kind claybuds sent me a recipe for a ^10 =
Porcelain Slip.
I , probably due to my advanced years, have managed to misplace this (to =
me ) very valuable piece of paper.
If the person that sent the recipe picks up this note can I please get =
you to send me another. I promise to not lose it this time. TIA.
Les Crimp in Nanoose Bay, B.C.
lcrimp@home.com
Penny Hosler on tue 26 sep 00
Les,
>From "Hands in Clay" - makes 1 gal, 128 fl oz - ^10-11 white porcelain
casting slip
EPK 1951.2 grams (40%)
Custer Feld 1219.5 grams (25%)
Silica 325 mesh 975.6 grams (20%)
Ball clay (OM4) 731.7 grams (15%)
Additives:
Soda ash 6.09 grams (.125%)
Sodium silicate 19.51 grams (fluid wt) (.40 %)
Darvan #7 19.51 grams (fluid wt) (.40 %)
Water 1936 gr/68.29 fl oz (or 39.62 gr/1.4 fl oz for 100
gr batch)
Sieve thru 80 mesh screen
White in oxidation, grey in reduction
Penny in WA
----- Original Message -----
From: "Les Crimp"
To:
Sent: Wednesday, September 20, 2000 4:13 PM
Subject: Cone 10 White Porcelain Slip
Hi All -
A while back one of you kind claybuds sent me a recipe for a ^10
Porcelain Slip.
I , probably due to my advanced years, have managed to misplace this
(to me ) very valuable piece of paper.
If the person that sent the recipe picks up this note can I please get
you to send me another. I promise to not lose it this time. TIA.
Les Crimp in Nanoose Bay, B.C.
lcrimp@home.com
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vince pitelka on tue 26 sep 00
> Les,
> >From "Hands in Clay" - makes 1 gal, 128 fl oz - ^10-11 white porcelain
> casting slip
This is a casting slip, and thus is thoroughly deflocculated. Normally, you
would never use a deflocculated slip for normal slip-decorating techniques,
because it flows too readily, and adjacent colors intermix and blend
spontaneously. I forgot to mention this when I posted the "All Temperature
White Base Slip" yesterday. I always flocculate it with 1/2 of 1% epsom
salts dissolved in hot water and added to the water for the slip. This
insures that the slip is not deffloculated at all by any residual alkalinity
in the materials, or by alkaline water. A flocculated slip will hang in
there even on a sloping or vertical surface, and when you place colors
directly adjacent or upon one another (as in feather-combing or marbling),
they will only intermix when you purposefully manipulate them.
Best wishes -
- 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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