Brian Molanphy on tue 30 jul 02
chris wrote:
'I get blood red with slip (cone ten). Has quite a bit of copper =
carb.
but I can't tell you exact numbers because I mix by color. I also add =
red
iron, but not tin. Try adding more then you think. Also, I just use my
clay as the base, b-mix.
By the way, you didn't say what cone you fire to?
chris
temecula, california
chris@ccpots.com
http://www.ccpots.com'
i used shaner's oribe inside some soda-fired pots, ^10. i'm not too =
pleased
with the inside, but the copper flashed red or green on the outside of =
the
pots in a way i quite like. the outside of the pots were dipped in babu =
slip.
(babu is a white-firing porcelain.) in an issue of 'studio potter' nan
mckinnell described her practice: she made a transparent base glaze,
portioned it, and added coloring oxides or carbonates to each portion. =
cobalt
and copper in one, iron in another, and maganese in another. in a vapor
firing, could such a practice be followed with body slip instead of base
glaze? any suggestions on percentages for particular colorants? (i'll =
shy
away from the manganese.)
thanks, brian
chris clarke on thu 1 aug 02
Brian wrote:
in an issue of 'studio potter' nan
mckinnell described her practice: she made a transparent base glaze,
portioned it, and added coloring oxides or carbonates to each portion.
cobalt
and copper in one, iron in another, and maganese in another. in a vapor
firing, could such a practice be followed with body slip instead of base
glaze? any suggestions on percentages for particular colorants? (i'll shy
away from the manganese.)
thanks, brian
Hey Brian,
What I do is I have a big bin slip, made from my clay body. I dip out two
cups and add my colorants with a spoon measure. I've gotten to were I can
tell by the shade of slip if it'll be the right fired color.
And I mix it all in a blender, no sieve. It's kind of hap-hazard, but slip
doesn't have to be as difficult as glazes in my opinion.
chris
temecula, california
chris@ccpots.com
http://www.ccpots.com
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