Carole Fox on sun 28 dec 03
Dear Earl,
The pots are not dusty before firing. And my kiln looks just fine inside
(well, except for the missing chunk of element holder that I knocked out
with a kiln shelf last month). I don't think the glazes I use have anything
to do with this. My bisqued ware just comes out with the powder on it.
I'm pretty sure I'm not the only one who has this problem - I think I have
read of many other clayarters who need to wipe or wash their bisque. I am
guessing that porcelain is more prone to this, for I do not remember having
this problem with stoneware. But that is just a guess.
I am doubtful this can be prevented, but I am still interested to know why
it happens.
Carole Fox
Silver Fox Pottery
Elkton, MD
thesilverfox@dol.net
----- Original Message -----
From: "Earl Krueger"
To: "Carole Fox" ; "Clayart"
Sent: Sunday, December 28, 2003 3:12 AM
Subject: Re: RR black crawling
>
> Carole Fox wrote:
>
> > The pots come out of the bisque fire
> > coated with a clay dust.
> > I wish I knew why this was so.
>
> Carole,
>
> OK, I understand but my original question still
> holds. Is there dust on the pots after drying but
> before bisque firing?
>
> I had another thought. It is possible that as the
> kiln heats something evaporates from the walls
> or elements and condenses on the cooler pots
> creating a dust. Similar to when copper or chrome
> evaporates from one pot and creates a blush on
> an adjacent pot. When you look at the inside of
> your kiln can you see any differences in color or
> texture, especially around the elements or near
> the lid?
>
> Can you remember if you changed anything, like
> your clay or glaze just before this started happening?
> What glazes other than the RR black do you use?
>
> Anybody out there seen anything like this happen?
>
> Earl...
> Bothell, WA, USA
>
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