darrell calhoun on thu 2 jun 05
I've been told that the blue specks showing up in my white pieces are from cobalt. Has anyone else had a studio or kiln contaminated with cobalt? What should I do?
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Donald G. Goldsobel on thu 2 jun 05
Do the specks go through the body or do they sit in the glaze or on the
surface of the body? If it is the later it might be contamination in the
kiln-try firing in a different kiln.
D
Subject: blue specks
> I've been told that the blue specks showing up in my white pieces are from
> cobalt. Has anyone else had a studio or kiln contaminated with cobalt?
> What should I do?
>
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marianne kuiper milks on thu 2 jun 05
How interesting! A thought:
About 12 years ago I was at a glass-blowing studio on
the Isle of Whythe (sp?), England. They were doing
their very last firing of cobalt-blue glass, because
it contaminated the kiln bricks, leaving residue on
other pieces. They were breaking it down the following
day, never to do - so they said- cobalt pieces again.
My daughter has a beautiful pitcher from that last
run. I wonder how this relates to what you are asking.
Marianne-
-- "Donald G. Goldsobel" wrote:
> Do the specks go through the body or do they sit in
> the glaze or on the
> surface of the body? If it is the later it might be
> contamination in the
> kiln-try firing in a different kiln.
>
> D
>
> Subject: blue specks
>
>
> > I've been told that the blue specks showing up in
> my white pieces are from
> > cobalt. Has anyone else had a studio or kiln
> contaminated with cobalt?
> > What should I do?
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam? Yahoo! Mail has the best spam
> protection around
> > http://mail.yahoo.com
> >
> >
>
______________________________________________________________________________
> > Send postings to clayart@lsv.ceramics.org
> >
> > You may look at the archives for the list or
> change your subscription
> > settings from http://www.ceramics.org/clayart/
> >
> > Moderator of the list is Mel Jacobson who may be
> reached at
> > melpots@pclink.com.
>
>
______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change
> your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be
> reached at melpots@pclink.com.
>
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