mel jacobson on sun 16 mar 08
as i have said, i am working on experiments with getting
copper red to change from red to purple, to blue...also some
green....on the same pot.
i have added a pix on the bottom of my clayart page.
it is getting just what i have been looking for.
all three colors.
some tips:
layer the glaze. thickness counts. i use up to five layers.
the big platter got a dose of a full ear syringe just before it
went into the kiln. that is the purple, crystal violet.
it is great to fire copper red in a maverick location of the kiln.
for me..front, lower shelves. very hot, and at times, reduction
is maverick. just what i want. and, a great use of a maverick spot.
i find that cone 11 over...is best for this color change.
i cannot stand that semi reduced, cold cone 9 liver color.
ick.
joe koons and i have been looking through old chinese and japanese
copper red glazes. they sure loved the red to blue...and of course,
in those big wood fired kilns....they got a great deal of variation.
and, that is how it happens...some accident, but knowing your kiln.
no sense wasting these experiments in cooler spots in the kiln.
just liver.
the firing i opened this morning had a multiple cool down cycle.
i down fired at 1900F for two hours, then at 1700 i fired back up
to 2000F and then let it cool a second time.
i know this is a key to great red.
i will bring a couple of these pots to nceca. you will be able to see
the tremendous variegation of the red...almost hare's fur. and of course,
that is what i have been shooting for.
mel jacobson, minnetonka, mn, usa
from minnetonka:
website http://www.visi.com/~melpots/
clayart site:
http://www.visi.com/~melpots/clayart.html
Hank Murrow on sun 16 mar 08
On Mar 16, 2008, at 11:43 AM, mel jacobson wrote:
> as i have said, i am working on experiments with getting
> copper red to change from red to purple, to blue...also some
> green....on the same pot.
>
> the firing i opened this morning had a multiple cool down cycle.
> i down fired at 1900F for two hours, then at 1700 i fired back up
> to 2000F and then let it cool a second time.
> i know this is a key to great red.
What was the atmosphere during each the down, and back up?
Cheers, Hank
jean szostek on mon 17 mar 08
Hi Mel,
im a potter from Belgium and until now my greatest attention gows to copper
red,
i read about your experiments, what is syrenge?
i joint a pix from my copper red.
thank you for the answer jean
mail : fa520033@skynet.be
site : www.szostekjean.be
----- Original Message -----
From: "mel jacobson"
To:
Sent: Sunday, March 16, 2008 7:43 PM
Subject: copper red experiments
> as i have said, i am working on experiments with getting
> copper red to change from red to purple, to blue...also some
> green....on the same pot.
>
> i have added a pix on the bottom of my clayart page.
>
> it is getting just what i have been looking for.
> all three colors.
>
> some tips:
>
> layer the glaze. thickness counts. i use up to five layers.
> the big platter got a dose of a full ear syringe just before it
> went into the kiln. that is the purple, crystal violet.
>
> it is great to fire copper red in a maverick location of the kiln.
> for me..front, lower shelves. very hot, and at times, reduction
> is maverick. just what i want. and, a great use of a maverick spot.
> i find that cone 11 over...is best for this color change.
>
> i cannot stand that semi reduced, cold cone 9 liver color.
> ick.
>
> joe koons and i have been looking through old chinese and japanese
> copper red glazes. they sure loved the red to blue...and of course,
> in those big wood fired kilns....they got a great deal of variation.
> and, that is how it happens...some accident, but knowing your kiln.
>
> no sense wasting these experiments in cooler spots in the kiln.
> just liver.
>
> the firing i opened this morning had a multiple cool down cycle.
> i down fired at 1900F for two hours, then at 1700 i fired back up
> to 2000F and then let it cool a second time.
> i know this is a key to great red.
>
> i will bring a couple of these pots to nceca. you will be able to see
> the tremendous variegation of the red...almost hare's fur. and of course,
> that is what i have been shooting for.
> mel jacobson, minnetonka, mn, usa
>
>
>
> from minnetonka:
> website http://www.visi.com/~melpots/
> clayart site:
> http://www.visi.com/~melpots/clayart.html
>
> ______________________________________________________________________________
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>
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>
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> melpots2@visi.com
>
>
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mel jacobson on fri 1 aug 08
have had some more interesting results with
copper red. i have been firing very hot, cone
12 probably....and a long down fire for crystal growth.
i also have added some water color effects, using
a cobalt wash.
when it runs/moves it is very interesting.
i put pix on my clayart website/click below.
as i have said, i am using a hot spot in my kiln...and
not fixing it...using it...it is for red only.
the rest of the kiln is firing to cone ten down.
(i could make a tiny wall, and move the heat, but
find that using the hot spot is really fun.
this is all pete's cranberry.
the blue plates are the same glaze..note the water
color wash on the blue copper. nice. the blue is in the
same place...and the reduction is blocked.
so. the beat goes on.
interesting...and some great show pieces for this spring.
mel
from minnetonka:
website http://www.visi.com/~melpots/
clayart site:
http://www.visi.com/~melpots/clayart.html
Veena Raghavan on fri 1 aug 08
Ooh! Very nice, lovely, Mel!
Thanks for sharing with us.
Veena
In a message dated 8/1/2008 9:55:56 AM Eastern Daylight Time,
melpots2@VISI.COM writes:
>
> have had some more interesting results with
> copper red. i have been firing very hot, cone
> 12 probably....and a long down fire for crystal growth.
> i also have added some water color effects, using
> a cobalt wash.
> when it runs/moves it is very interesting.
>
> i put pix on my clayart website/click below.
>
> as i have said, i am using a hot spot in my kiln...and
> not fixing it...using it...it is for red only.
> the rest of the kiln is firing to cone ten down.
>
VeenaRaghavan@cs.com
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