Bill Merrill on fri 19 aug 11
Here's a little information on naked "peeling" Raku. Kate and Will
Jacobsen lived close by at one time and this a little of what you may
want. This is just to send out a little information to those whom it
may be of interest too. Good luck, you can't go wrong, even if you do
it will give you valuable information and experience. You can't gain
experience by talking about something...you have to do something to gain
experience.
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RAKU "PEELING" SLIP
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After bisque firing cover your Raku form with slip. Apply about a dime
thickness, make the slip thicker on the pot if you find the dime
thickness too thin.
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PEELING SLIP 40 Lincoln 60 fire clay another fairly
coarse fireclay could be used successfully.
30 Tile 6 clay
20 Ione 412 grog
10 Custer feldspar
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After the slip is dry to the touch ( only a few minutes) Cover the slip
with the following glaze.
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Glaze used to cover slip 60 Ferro frit 3110 =3D20
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40 colemanite/Gertsley Borate
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After the pot has been covered with slip and glaze, scratch through
the glaze and slip to the clay body itself. Scratch larger bolder areas
away if your drawing or design calls for it.
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Allow the glaze and slip to dry and fire to cone 014 or approximately
1500-1540 degrees Fahrenheit. Remove the piece from the kiln and cover
with sawdust or other combustible materials. After the temperature of
the form has cooled below red heat, spray with water, or plunge in
water. The glaze and slip will fall away from the form, reveling a
smoky, black line where you
scratched through the slip and glaze. =3D20
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If you fire too high in temperature, the glaze will adhere to the form,
not allowing the glaze and slip to be peeled off and reveling your
drawing.
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Colored slips can be applied to a pot before firing, so the port will
have color variation all over the surface, with a dark design covering
the pot.=3D20
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This technique allows you to show your creativeness, drawing and design
skills
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Bill=3D20
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