L. P. Skeen on sat 24 nov 01
Gene,
I hate to tell ya, but I'm suspecting she was uninformed. Contact Charlie
Riggs mailto:fireclay@earthlink.net for more information on the fading of
copper raku. He has done extensive testing and basically stopped doing
copper raku BECAUSE it fades.
Lisa
----- Original Message -----
From: Arnolds Home Improvements
To:
Sent: Sunday, November 25, 2001 7:25 PM
Subject: luster raku
> Hello all
>
> I'm a little confused!!! We attended a local pottery show last weekend saw
> some beautiful pots. There was a lady there with the best looking copper
> luster raku I have ever seem. Here is what is confusing me, I asked how
long
> before the copper color would start to fade? Her answer to me was they
> would never fade, now I thought they would all change colors. Am I wrong
or
> are there recipes I don't know about?? If there are copper luster's that
> will not fade will someone be willing to share some of them with the ole
mud
> duck??
>
> Gene Arnold
> mudduck@advi.net
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
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>
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>
Tommy Humphries on sun 25 nov 01
Never, is a loooooong damn time.
I have a few pieces that were glazed with alligator...still lively after
nearly 7 years. Have a few more that are a dull gray color after only 3
years. It all depends on the firing, and the sunlight/oxygen exposure and
what phase the moon is in when the glaze is applied:^)
Never say never...
Tommy
----- Original Message -----
From: "Arnolds Home Improvements"
To:
Sent: Sunday, November 25, 2001 6:25 PM
Subject: luster raku
> Hello all
If there are copper luster's that
> will not fade will someone be willing to share some of them with the ole
mud
> duck??
>
> Gene Arnold
> mudduck@advi.net
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
>
Arnolds Home Improvements on sun 25 nov 01
Hello all
I'm a little confused!!! We attended a local pottery show last weekend saw
some beautiful pots. There was a lady there with the best looking copper
luster raku I have ever seem. Here is what is confusing me, I asked how long
before the copper color would start to fade? Her answer to me was they
would never fade, now I thought they would all change colors. Am I wrong or
are there recipes I don't know about?? If there are copper luster's that
will not fade will someone be willing to share some of them with the ole mud
duck??
Gene Arnold
mudduck@advi.net
Ababi on mon 26 nov 01
When you want to keep the luster from fading, the best way is to take a
photograph right after you make it!
---------- Original Message ----------
>Gene,
>I hate to tell ya, but I'm suspecting she was uninformed. Contact
>Charlie
>Riggs mailto:fireclay@earthlink.net for more information on the fading
>of
>copper raku. He has done extensive testing and basically stopped doing
>copper raku BECAUSE it fades.
>Lisa
>----- Original Message -----
>From: Arnolds Home Improvements
>To:
>Sent: Sunday, November 25, 2001 7:25 PM
>Subject: luster raku
>> Hello all
>>
>> I'm a little confused!!! We attended a local pottery show last
>weekend saw
>> some beautiful pots. There was a lady there with the best looking
>copper
>> luster raku I have ever seem. Here is what is confusing me, I asked
>how
>long
>> before the copper color would start to fade? Her answer to me was
>they
>> would never fade, now I thought they would all change colors. Am I
>wrong
>or
>> are there recipes I don't know about?? If there are copper luster's
>that
>> will not fade will someone be willing to share some of them with the
>ole
>mud
>> duck??
>>
>> Gene Arnold
>> mudduck@advi.net
>>
>>
>________________________________________________________________________
>____
>__
>> Send postings to clayart@lsv.ceramics.org
>>
>> You may look at the archives for the list or change your subscription
>> settings from http://www.ceramics.org/clayart/
>>
>> Moderator of the list is Mel Jacobson who may be reached at
>melpots@pclink.com.
>>
>________________________________________________________________________
>______
>Send postings to clayart@lsv.ceramics.org
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>Moderator of the list is Mel Jacobson who may be reached at
>melpots@pclink.com.
Fay & Ralph Loewenthal on mon 26 nov 01
Gene, maybe I had a lucky accident. I made a pot with=20
copper decoration and put it into a raku kiln. I reduced
it in leaves, etc. That was at least eight years ago. It has
been on the coast for seven years, and the copper for the
most part is still as it was when I took it out of the=20
reduction bin. So it is possible that the copper lustre
may not fade, but one has to be able to control your
environments pretty well or have lucky accidents. Hope
this helps Ralph in Cape Town
Ababi on wed 28 nov 01
I add here a recipe from Dewit G.'s list
LUSTEROUS BLUE
==============
GERSTLEY BORATE..... 40.00 44.44%
SODA FELDSPAR....... 10.00 11.11%
ULTROX.............. 10.00 11.11%
COPPER OXIDE........ 20.00 22.22%
COBALT OXIDE........ 10.00 11.11%
========
90.00
otes:
This glaze yields a metallic blue surface with variations of magenta,
yellow,
and green. After firing, use tongs to place the red-hot pot in a pile of
shredded
newspaper for a about a minute, then a)cover and let cool completely or
b)
remove
from newspaper and quench in water.
++++++++++++++++++++++++++++==
Now My words. This glaze looks very expensive, but you use it very
thin. It looks different on a clear glaze or on the bare ware. This way
, on the bare clay, is my favorite you get it, different every time,
like old copper ware the way they look in the flee markets.
( In Jaffa where there is a flee market they have a special "technique"
how to take a new brass or copper ware and make it old I think with
brown shoes past).
I changed materials,
Lustrous blue revised by Ababi
================================
LAGUNA BORATE....... 17.00 16.83%
MAGNESIUM CARBONATE. 2.00 1.98% it is important because it makes
the cobalt toward violet
FRIT 3134........... 28.00 27.72%
EPK KAOLIN.......... 3.00 2.97%
ULTROX.............. 10.00 9.90%
COPPER OXIDE........ 20.00 19.80%
cobalt oxide............... 20.00 19.80%
========
100.00
CaO 0.64* 16.41%
MgO 0.12* 2.27%
K2O 0.01* 0.53%
Na2O 0.22* 6.37%
SrO 0.00* 0.01%
TiO2 0.00 0.05%
ZrO2 0.20 11.12%
Al2O3 0.10 4.84%
B2O3 0.66 20.96%
P2O5 0.00 0.01%
SiO2 1.36 37.37%
Fe2O3 0.00 0.07%
Si:Al 13.11
SiB:Al 19.46
Expan 7.63
The result. Above glaze violet not shine enough, perhaps need to be
thicker, or more frit.
On bare clay violet , again I applied to thin, I had too much water in
the slurry.
I made it on purpose with "yours" material . I think they make these
frits in Portugal.
This is a very interesting base expensive, but you don't use it in big
amounts.
Here is another glaze I have re tested: Mister king matte, turned out
nice but I lost the recipe. Should be on Dewit's list. If you have it
please send me
Ababi
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