Gene Arnold on wed 1 dec 04
I have a customer that has requested some pieces in a light purple. I've =
been thinking of adding a purple to the glazes I use anyway. So I tried =
one called eggplant that I found in the archives, but it's too dark.
It has 2%cobalt ox. and 5% manganese for colorants. I think these are =
the correct %, I don't have the recipe in front of me at this time.
What changes in this ratio do I need to make a lighter purple ???
I fire to cone 6 ox.
Gene & Latonna
mudduck@mudduckpottery.com
www.mudduckpottery.com
Darnie Sizemore on thu 2 dec 04
You might want to try using a mason stain in a clear
or white base glaze. Pansy purple can be a nice light
purple at 10%.
Darnie
--- Gene Arnold wrote:
> I have a customer that has requested some pieces in
> a light purple. I've been thinking of adding a
> purple to the glazes I use anyway. So I tried one
> called eggplant that I found in the archives, but
> it's too dark.
>
> It has 2%cobalt ox. and 5% manganese for colorants.
> I think these are the correct %, I don't have the
> recipe in front of me at this time.
>
> What changes in this ratio do I need to make a
> lighter purple ???
>
> I fire to cone 6 ox.
>
>
> Gene & Latonna
> mudduck@mudduckpottery.com
> www.mudduckpottery.com
>
>
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Cindy on thu 2 dec 04
Gene,
You will have to test, but if you're happy with the color itself, you may be
able to lighten it up by adding an opacifier. You will also get a lighter,
brighter color over white or buff clay than over brown.
Best of luck,
Cindy in SD
Subject: cone 6 purple
I have a customer that has requested some pieces in a light purple. I've
been thinking of adding a purple to the glazes I use anyway. So I tried one
called eggplant that I found in the archives, but it's too dark.
It has 2%cobalt ox. and 5% manganese for colorants. I think these are the
correct %, I don't have the recipe in front of me at this time.
What changes in this ratio do I need to make a lighter purple ???
I fire to cone 6 ox.
Gene & Latonna
mudduck@mudduckpottery.com
www.mudduckpottery.com
Marcia Selsor on thu 2 dec 04
You can get a lavendar with a high magnesium glaze and cobalt..without
the manganese. Dolomite is a good source for magnesium.
Marcia Selsor
On Dec 1, 2004, at 7:34 PM, Gene Arnold wrote:
> I have a customer that has requested some pieces in a light purple.
> I've been thinking of adding a purple to the glazes I use anyway. So I
> tried one called eggplant that I found in the archives, but it's too
> dark.
>
> It has 2%cobalt ox. and 5% manganese for colorants. I think these are
> the correct %, I don't have the recipe in front of me at this time.
>
> What changes in this ratio do I need to make a lighter purple ???
>
> I fire to cone 6 ox.
>
>
> Gene & Latonna
> mudduck@mudduckpottery.com
> www.mudduckpottery.com
Chris Schafale on thu 2 dec 04
Gene,
Just leave out the manganese (Mn) and, in a glaze with plenty of magnesia
(Mg) you'll get light purple.
Chris
At 09:34 PM 12/01/2004, you wrote:
>I have a customer that has requested some pieces in a light purple. I've
>been thinking of adding a purple to the glazes I use anyway. So I tried
>one called eggplant that I found in the archives, but it's too dark.
>
>It has 2%cobalt ox. and 5% manganese for colorants. I think these are the
>correct %, I don't have the recipe in front of me at this time.
>
>What changes in this ratio do I need to make a lighter purple ???
>
>I fire to cone 6 ox.
>
>
>Gene & Latonna
>mudduck@mudduckpottery.com
>www.mudduckpottery.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.
Light One Candle Pottery
Fuquay-Varina, North Carolina, USA (near Raleigh)
www.lightonecandle.com
Galleries of Pottery Forms by Clayart Potters: www.potteryforms.org
Email: chris at lightonecandle dot com
Ivor and Olive Lewis on fri 3 dec 04
Dear Gene Arnold,
Such a pity you are restricted to Oxidation firings.
Had you access to reducing conditions one of the best combinations to
explore is Cobalt Carbonate and Copper Carbonate in an opaque white
glaze base or a clear base over a white clay.
By keeping the Cobalt fraction very low, in the range 0.1 / 0.5% and
the Copper to a ratio of from two to five times the Cobalt Carbonate
value you would reveal a whole spectrum of violet tints.
If you go along the stain route to a solution, remember you can get
dilutants and white stains.
Best regards,
Ivor Lewis.
Redhill,
S. Australia.
Bob Hanlin on sat 4 dec 04
Along with what Ivor said, you probably need to add a bit of tin oxide to support the purple tints.
Ivor and Olive Lewis wrote:
Dear Gene Arnold,
Such a pity you are restricted to Oxidation firings.
Had you access to reducing conditions one of the best combinations to
explore is Cobalt Carbonate and Copper Carbonate in an opaque white
glaze base or a clear base over a white clay.
By keeping the Cobalt fraction very low, in the range 0.1 / 0.5% and
the Copper to a ratio of from two to five times the Cobalt Carbonate
value you would reveal a whole spectrum of violet tints.
If you go along the stain route to a solution, remember you can get
dilutants and white stains.
Best regards,
Ivor Lewis.
Redhill,
S. Australia.
______________________________________________________________________________
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.
Don Goodrich on sat 4 dec 04
Funny you should mention it. I just visited a friend's studio nearby, and
asked about some pleasing purples among her cone 6 wares. She told me they
were just chrome-tin pink/red with less than 1 percent cobalt added. I'm
not sure which recipe she's using but the cobalt was about 0.7%. You might
try going this route, and see what you get.
Don Goodrich
goodrichdn@aol.com
http://dongoodrichpottery.com/
L. P. Skeen on sun 5 dec 04
Yupyup, that's yer basic Color Theory 101 - red + blue = purple. :) Hey
Gene, you might also want to try Kemp Purple, which you may find in the
archives. If you don't, lemme know and I'll dig the recipe out of MY
archives.......if I can find them....
Lisa
----- Original Message -----
From: "Don Goodrich" goodrichdn@AOL.COM>
She told me they were just chrome-tin pink/red with less than 1 percent
cobalt added.
Alisa Liskin Clausen on wed 8 dec 04
On Wed, 1 Dec 2004 21:34:29 -0500, Gene Arnold wrote:
>I have a customer that has requested some pieces in a light purple. I've
been thinking of adding a purple to the glazes I use anyway. So I tried one
called eggplant that I found in the archives, but it's too dark.
>
Dear Gene,
Ababi liked purple and there must be several of his glaze recipes in the
archives.
Additionally, I have some notes about Ron and John's Raspberry, both as a
blue and a purple version.
The purple version calls for the base recipe plus
the addition of
0,2 Chrome
7,5 Tin ox.
1,0 Cobalt Carb.
0,25 RIO
I do not have a credit for this version, but it could have been Ababi.
best regards from Alisa in Denmark
Cindy on wed 8 dec 04
Hi, Alisa
What's all this speaking about Ababi in the past tense? I assumed he was
busy. Has something happened to him?
Cindy
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