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crank slurry / slip

updated sat 26 oct 02

 

Dawn Christensen on fri 25 oct 02


Hi
I am looking for a recipe to use for raku / smoking that I can apply
to a pot and peel off. I often hear it referred to as crank slurry. I have
one recipe from the book. "Barrel,Pit, and Saggar Firing" but, I do not
understand all the ingredients and I am looking up substitutes if possible.
slip - 40% LINCOLN 60 FIRECLAY
30% 6-TILE CLAY
20% LONE 412 GROG
10% CUSTER FELDSPAR


What is tile clay? How can I tell if a frit is alkaline and what would an
alkaline frit do compared to another type? (different recipe) Is lincoln 60
fireclay a name brand?
I would appreciate any recipes anyone is willing to share. Thanks, Dawn /
Wisconsin

Snail Scott on fri 25 oct 02


At 08:52 AM 10/25/02 EDT, you wrote:
>...I do not
>understand all the ingredients and I am looking up substitutes if possible.
> slip - 40% LINCOLN 60 FIRECLAY
> 30% 6-TILE CLAY
> 20% LONE 412 GROG
> 10% CUSTER FELDSPAR
>What is tile clay? ...Is lincoln 60 fireclay a name brand?


6-Tile is a brand of kaolin. Any kaolin will do.
Lincoln 60 is a brand of fireclay. Any fireclay will do.
Ione Grog is a brand of grog. (No longer made.) Any grog will do.
Custer Feldspar is a potash spar. Any feldspar will do.

For glazes, the subtle differences between types of materials
can cause widely varies results. For this purpose, though,
it's unlikely to matter very much. Feel free to substitute.

-Snail

Ingeborg Foco on fri 25 oct 02


Dawn,

What you can do is use your own clay body. Sieve it to remove any grog or
sand so it is smooth and viola, you have a clay slip/stencil for your raku.
I've done this lots of times and it works great. (just melt down your clay
and then sieve it)

Good luck

Ingeborg
the Potter's Workshop & Gallery
P.O. Box 510
3058 Stringfellow Road
St. James City, Florida 33956

239-283-2775