Galen Kirkwood on sun 26 nov 00
On Sun, 26 Nov 2000 18:10:03 -0800, you wrote:
>Hi Galen,
> I think you figured out your own answer! Your bottom glaze is =
formulated
>to be mature over a wider range, 04-6, than the top glaze. So, I think
>your bottom glaze was trying to release gas before the top glaze coat =
was
>fluid enough to let the gases through.
>
>Cheers
>Jocelyn
>
>
Thanks Jocelyn,
I'm thinking that has something to do with it, as the rest of the load =
was fine. I have put ^5 over an ^04-6 before with
out problems, so maybe its this particular combo. What i'm wondering is =
it more likely the bubbles would appear during
the firing and not smooth over when it reached temp, or, continue to =
bubble on cool down after the ^5 has set up some.
I'm wondering if I did a hold at ^5 or lower during cool down if it would=
remedy this. I'm hesitant to try this as I
suspect my other pieces may continue to flow(on to my shelves!) May be a =
moot point though, as I wasn't to smitten by
the color I got...arg, now I'm just babbling. :)
Thanks again
Galen
Galen Kirkwood on sun 26 nov 00
Hi,
I did a ^5 firing the other day and had some bubbles on a particular =
glaze combination. It was a ^5 glaze (chun
red,transparent)) over a ^04-6 glaze(turquios blue,transparent). The rest=
of the load was fine cones dropped fine, top
to bottom all from the same bisque load. I've used the ^04-6 glaze *over*=
the ^5 before with no problems. Is it possible
that the ^5 glaze stiffened up on cool down and the ^04-6 glaze was still=
bubbling? These are pre-mixed dry glazes I
bought from stores, so I don't know what the exact ingredients are. Any =
clues besides "stay away from that combo!" ? :)
thanks a bunch,
Galen
Jocelyn McAuley on sun 26 nov 00
Hi Galen,
I think you figured out your own answer! Your bottom glaze is formulated
to be mature over a wider range, 04-6, than the top glaze. So, I think
your bottom glaze was trying to release gas before the top glaze coat was
fluid enough to let the gases through.
Cheers
Jocelyn
On Sun, 26 Nov 2000, Galen Kirkwood wrote:
> Date: Sun, 26 Nov 2000 12:31:16 -0800
> From: Galen Kirkwood
> Reply-To: Ceramic Arts Discussion List
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: Bubbles and glaze combos
>
> Hi,
> I did a ^5 firing the other day and had some bubbles on a particular glaze
combination. It was a ^5 glaze (chun
> red,transparent)) over a ^04-6 glaze(turquios blue,transparent). The rest
of the load was fine cones dropped fine, top
> to bottom all from the same bisque load. I've used the ^04-6 glaze *over*
the ^5 before with no problems. Is it possible
> that the ^5 glaze stiffened up on cool down and the ^04-6 glaze was still
bubbling? These are pre-mixed dry glazes I
> bought from stores, so I don't know what the exact ingredients are. Any
clues besides "stay away from that combo!" ? :)
>
> thanks a bunch,
> Galen
>
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--
Jocelyn McAuley ><<'> jocie@worlddomination.net
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