Susan L. Ross on tue 30 sep 97
Hi All --
I have a technical question here...
I am playing around with underglazes on green and bisque that will eventually
be clear glazed fired to ^5 or ^6. What's the lowest approximate temperature
or cone I can fire to inbetween coats if I'm layering the underglazes? Do I
need to fire to ^05 like the label says or can I get away with something like
^08, 010, or even lower?
TIA :-)
Su
Potting in Piedmont CA
RubySuMoon@aol.com
Unruly JuliE on wed 1 oct 97
Su,
You don't need to fire between coats of underglaze, and do not
need to "re-bisque" before applying glaze if you carefully sponge
on the first coat of glaze over the underglane, let dry throughly
and then brush on remaining glaze coats. Why would you want to
bisque that low?? I think the ^05 bisque is just a safegard so
you don't damage the underglaze (by making it permenant). You
would have to try a lower bisque to see if you have any problems
with wiping off the underglaze when brushing on glaze.
Three solid coats of one underglaze (not one-strokes) will totally
cover another underglaze.
Hope this helps
JuliE
Michelle H. Lowe on wed 1 oct 97
> ----------------------------Original message----------------------------
> Hi All --
>
> I have a technical question here...
>
> I am playing around with underglazes on green and bisque that will eventually
> be clear glazed fired to ^5 or ^6. What's the lowest approximate temperature
> or cone I can fire to inbetween coats if I'm layering the underglazes? Do I
> need to fire to ^05 like the label says or can I get away with something like
> ^08, 010, or even lower?
I was looking at some bowls by a friend today with many layers of
underglaze (a very detailed painting of a bird with lots of colors),
over a colored slip, and they were all applied onto greenware before
bisquing. She doesn't fire them in between layers at all and the
detail was incredible.
Mishy
Michelle Lowe, potter in the Phoenix desert \|/ |
mishlowe@indirect.com -O- | |
mishlowe@aztec.asu.edu /|\ | | |
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http://www.amug.org/~mishlowe ____ |
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<__>
Chris Kunze on thu 2 oct 97
Dear Su,
There is no need to fire between coats of underglaze. You can just put one
right over the other. You can even blend and shade with them. I always put
the underglaze on greenware because it's easier for me to correct any
mistakes I may make. I just scrape it off and start over. On bisque it's
hard to get off without messing and smudging. If you put the underglaze on
the bisque you don't have to put it through a fire before glazing over unless
you feel it is necessary. The commercial underglazes have a hardener in them
so they don't tend to smudge when glazing over. You'll just have to
experiment I guess.
Chris
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