africaunusual@MWEB.CO.ZA on sun 18 jun 00
Hi Ababy
There can be several answers to this.
Did you at any stage pour water off this batch of glaze? Parts of
the Gerstley are water soluble and if you did pour off water you
would have lost some of them.
The most common reason for getting green though, is firing too hot.
Although FB is supposed to be a ^6 glaze, I get much better results
with a small ^5 in the kiln sitter and a fairly fast fire.
I WISH I could use RR's frit version, but our frits here in South
Africa are different and if Ferro here were to part with a chemical
analysis so I could try and formulate something close, they would
all drop down dead. At least that is the way they act
Toni
Charlie and Linda Riggs on sun 18 jun 00
For those of you who WANT a real vivid shiny sea-green (breaking rust on darker
clays), try refiring the Ron Roy Floating Blue # 3 (reformulated without GB) to
cone 06 after your original cone 6 firing. Don't ask me why this happens...I just
work here.
Linda Riggs
Sharon31 on sun 18 jun 00
Thank you Tony.
I did not pour water off the batch as it was only the first 100 grams. The
melting was good. can it be that 4 rutile is too much? Perhaps it is better
to reduce the flux as my glazes are at ^6 some work good at ^5. I do not
fire so many works to fill the kiln with floating B.
Ababi
sharon@shoval.org.il
http://www.israelceramics.org/main.asp?what=gallery.htm
http://www.milkywayceramics.com/cgallery/asharon.htm
----- Original Message -----
From:
To:
Sent: Sunday, June 18, 2000 12:57
Subject: Why Floating green?
> Hi Ababy
> There can be several answers to this.
> Did you at any stage pour water off this batch of glaze? Parts of
> the Gerstley are water soluble and if you did pour off water you
> would have lost some of them.
> The most common reason for getting green though, is firing too hot.
> Although FB is supposed to be a ^6 glaze, I get much better results
> with a small ^5 in the kiln sitter and a fairly fast fire.
> I WISH I could use RR's frit version, but our frits here in South
> Africa are different and if Ferro here were to part with a chemical
> analysis so I could try and formulate something close, they would
> all drop down dead. At least that is the way they act
> Toni
>
>
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