Mark & Sylvia Mondloch on sun 29 feb 04
I've been playing around with stalls in the cooling cycle and am also
putting small dishes of salt in the flame channel with a "target" pot right
after it. I've been getting that iridescence on the target pots in a 'halo'
around the area where the flame hits the pots, but not on any other pots. I
love it, but was wondering if a high-fire iridescence like this is stable or
a surface effect that will fade like some of the raku lusters do.
I looked through my old CM's for Gary Holts article, but I give away alot of
my old CMs to visiting students and that one is apparently gone. Might have
to reorder it. Is the article a how-to?
Sylvia
Ivor and Olive Lewis on mon 1 mar 04
Dear Sylvia,
You do not say which salts you are using for your firing temperature.
I would suggest that since you say it is high fire you mean something
over cone 6.
In which case the salt vapour will have diffused through the surface
of the glaze into the upper layer and will not be sitting adhering to
the surface. So we might be able to assume that it is a permanent
effect.
See Kingery and Vandiver on the science of classical ceramics.
Best regards,
Ivor Lewis. Redhill, South Australia
Hank Murrow on mon 1 mar 04
Dear Sylvia;
I have pots with iridescence from lustres applied during cooling in the
salt fire which have been in use here for 30 years without fading.
YMMV.
Cheers, Hank
On Feb 29, 2004, at 7:55 PM, Mark & Sylvia Mondloch wrote:
> I've been playing around with stalls in the cooling cycle and am also
> putting small dishes of salt in the flame channel with a "target" pot
> right
> after it. I've been getting that iridescence on the target pots in a
> 'halo'
> around the area where the flame hits the pots, but not on any other
> pots. I
> love it, but was wondering if a high-fire iridescence like this is
> stable or
> a surface effect that will fade like some of the raku lusters do.
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