Yisrael Leshman on sat 30 nov 96
hi
i have just started to use underglaze in powder form
after a long time i have used liquid form.
i just add water to the powder, but the resultes are not
as good as expected.
during painting/brushing the powder comes off as it does not
adhere well to the bisquit, and after firing in un-glazed
ereas it still comes off.
does anyone have any idea of what kind of additives
should i add to the powder in order to get the right resulets
as ready to use under-glazes do ??
yisrael & sygalle Leshman
zichron-yaakov 30900
israel
yisi@isracom.co.il
Michelle H. Lowe on sun 1 dec 96
At 9:55 PM 11/30/96 -0500, Yisrael Leshman wrote:
>----------------------------Original message----------------------------
>hi
>
>i have just started to use underglaze in powder form
>after a long time i have used liquid form.
>
>i just add water to the powder, but the resultes are not
>as good as expected.
>
>during painting/brushing the powder comes off as it does not
>adhere well to the bisquit, and after firing in un-glazed
>ereas it still comes off.
>
>
>does anyone have any idea of what kind of additives
>should i add to the powder in order to get the right resulets
>as ready to use under-glazes do ??
I have not heard of powdered underglazes, are you sure what you are using
isn't stain? I would try mixing 1/1 with a frit (3124, 3110, or 3134), or
Gerstley Borate, and at a higher ratio for some colors (more frit or G.B.
with dark blues pinks and browns, like 1/2). It sounds like you need some
sort of flux to get the stains to melt a bit.
Adding some borax to the mix might keep the surfaces from powdering off so
easily also.
Good luck,
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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