Beth Spindler on sun 11 nov 07
not sure where I heard this, but someone told me that they fired a load of pots and when they opened the kiln, lo and behold, the pieces near the bottom of the kiln were this beautiful shade of red...a mouse/rat? and gotten into the bottom of the kiln and exploded when the heat turned up...if these pots were functional, would they still be safe to serve food on?
I love red glazes, but not sure I want to add a mouse or rat to the firing process..........????
Beth in foothills of VA
Chilly mornings now...my little mini pin shivers with delight as we go for a morning walk, doesn't want to come back into the house!
--Original Message-----
From: Lili Krakowski
To: CLAYART@LSV.CERAMICS.ORG
Sent: Sat, 10 Nov 2007 10:19 am
Subject: Misc: Oversophistication/Reduction/blood in the celadon
It is someplace in Leach's book, and Frans Wildenhain used to mention it a?
lot. We are overrefined and oversophisticated.?
For instance we add stuff to our cobalt to make it look more like the?
original cobalt whose effects we so admire on ancient pots.?
Yes cobalt costs a lot, so does everything these days, and but in the Cardew?
recipe I sent it is only a tidge under 20%.?
?
Also: SO many flush the cobalt down the drain! NO! STOP! Have one or two?
rinse jars for each color you use. When you have done your breathtaking?
brush work with the cobalt, rinse the brush and the cup etc into a rinse?
jar. Let the stuff dry and reuse.?
Use a rinse jar for the pan etc as well....When you scrape glaze off a foot,?
save it. Do not return to mother-jar but keep, dry, test.?
Save the first rinse water from your glaze pans...Again save, dry, test,?
use.?
?
As to reduction: I always have been told that NO ONE in the ancient past?
PLANNED to reduce! (Not their weight, you sillies, their kilns. Famine,?
drought, flood, disease took care of their avoirdupois!) Reduction is a?
natural byproduct of wood firing...They did not sit there and say: "Oh, wow,?
having hauled that wood off the mountain and cut and split and stacked and?
dried and lugged and heaved and like that, we now are going to waste it!"?
Reduction comes with stoking--as Mr Hendley told us this a.m.?
?
Some time ago I asked for help in testing something I had long speculated?
about. I read once that the "ancients" used blood in their glazes for?
better adhesion, and speculated that celadons may have originated there. I?
wanted someone to try it....Anyway, Ron Roy offered and turned out little?
samples that sit on my treasure shelf now.And yes: blood turned a colorless?
glaze celadon. You do not need heroics to test this. Get some chicken?
livers at the butcher's, and use the liquid...I suppose you could use the?
livers themselves if you blenderized them, but why not eat them, or feed to?
cat??
?
And yes. I also think some gorgeous copper reds came from storing glazes in?
bronze or copper vessels. But that is for?
someone else to try.?
?
?
?
?
?
?
?
?
?
Lili Krakowski?
Be of good courage?
?
______________________________________________________________________________?
Clayart members may send postings to: clayart@lsv.ceramics.org?
?
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?
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Dannon Rhudy on sun 11 nov 07
Beth said:
.......fired a load of pots and when they opened the kiln,
lo and behold, the pieces near the bottom of
the kiln were this beautiful shade of red...a mouse/rat?
and gotten into the bottom of the kiln .......
In the first place, this is probably a myth. If not, a
mouse trapped in the kiln would burn up, rather than
"explode", unless somehow the kiln magicly suddenly
leapt from room temp to past boiling point. If a mouse
(or any other carbon-rich substance ) WAS in the kiln,
it would certainly add carbon to the atmosphere during
the time it was burning, but that time would come
long before glazes were molten. A small amount, such
as a mouse, would be unlikely to create enough carbon
to affect a glaze far later in the firing.
In the second place, if there were a mouse or other small
animal in the kiln, and the kiln reached glaze temps (between
1800F, say, and 2300F, any residue would be ash. You
would not end such a firing with bits of "mouse" lying about
on the surfaces of the work. Work that comes out of a kiln
is pretty much sterile until room air/human hands/whatever
touches it. There might be other problems, but germs/bacteria/
fungi/whatever won't be it.
So, keep your kiln tidy, there won't be invaders, and find other
sources for reduction to achieve reds.
Regards
Dannon Rhudy
> not sure where I heard this, but someone told me that they and exploded
when the heat turned up...if these pots were functional, would they still be
safe to serve food on?
> I love red glazes, but not sure I want to add a mouse or rat to the firing
process..........????
> Beth in foothills of VA
> Chilly mornings now...my little mini pin shivers with delight as we go for
a morning walk, doesn't want to come back into the house!
>
>
>
>
> --Original Message-----
> From: Lili Krakowski
> To: CLAYART@LSV.CERAMICS.ORG
> Sent: Sat, 10 Nov 2007 10:19 am
> Subject: Misc: Oversophistication/Reduction/blood in the celadon
>
>
> It is someplace in Leach's book, and Frans Wildenhain used to mention it
a?
> lot. We are overrefined and oversophisticated.?
> For instance we add stuff to our cobalt to make it look more like the?
> original cobalt whose effects we so admire on ancient pots.?
> Yes cobalt costs a lot, so does everything these days, and but in the
Cardew?
> recipe I sent it is only a tidge under 20%.?
> ?
> Also: SO many flush the cobalt down the drain! NO! STOP! Have one or two?
> rinse jars for each color you use. When you have done your breathtaking?
> brush work with the cobalt, rinse the brush and the cup etc into a rinse?
> jar. Let the stuff dry and reuse.?
> Use a rinse jar for the pan etc as well....When you scrape glaze off a
foot,?
> save it. Do not return to mother-jar but keep, dry, test.?
> Save the first rinse water from your glaze pans...Again save, dry, test,?
> use.?
> ?
> As to reduction: I always have been told that NO ONE in the ancient past?
> PLANNED to reduce! (Not their weight, you sillies, their kilns. Famine,?
> drought, flood, disease took care of their avoirdupois!) Reduction is a?
> natural byproduct of wood firing...They did not sit there and say: "Oh,
wow,?
> having hauled that wood off the mountain and cut and split and stacked
and?
> dried and lugged and heaved and like that, we now are going to waste it!"?
> Reduction comes with stoking--as Mr Hendley told us this a.m.?
> ?
> Some time ago I asked for help in testing something I had long speculated?
> about. I read once that the "ancients" used blood in their glazes for?
> better adhesion, and speculated that celadons may have originated there.
I?
> wanted someone to try it....Anyway, Ron Roy offered and turned out little?
> samples that sit on my treasure shelf now.And yes: blood turned a
colorless?
> glaze celadon. You do not need heroics to test this. Get some chicken?
> livers at the butcher's, and use the liquid...I suppose you could use the?
> livers themselves if you blenderized them, but why not eat them, or feed
to?
> cat??
> ?
> And yes. I also think some gorgeous copper reds came from storing glazes
in?
> bronze or copper vessels. But that is for?
> someone else to try.?
> ?
> ?
> ?
> ?
> ?
> ?
> ?
> ?
> ?
> Lili Krakowski?
> Be of good courage?
> ?
>
____________________________________________________________________________
__?
> Clayart members may send postings to: clayart@lsv.ceramics.org?
> ?
> You may look at the archives for the list, post messages, or change your?
> subscription settings here: http://www.acers.org/cic/clayart/?
> ?
> Moderator of the list is Mel Jacobson who may be reached at
melpots2@visi.com?
>
>
> ________________________________________________________________________
> Email and AIM finally together. You've gotta check out free AOL Mail! -
http://mail.aol.com
>
>
____________________________________________________________________________
__
> Clayart members may send postings to: clayart@lsv.ceramics.org
>
> You may look at the archives for the list, post messages, or change your
> subscription settings here: http://www.acers.org/cic/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots2@visi.com
>
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