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glaze test for caramel apple, cone 6 oxidation -- comment

updated thu 11 dec 03

 

Chris Schafale on sun 7 dec 03


FYI for anyone trying this glaze. First, the recipe Alisa gives below is NOT
Greg Lamont's original Caramel Apple, but the variation I posted recently
(with a lot more silica, based on my Currie test results). I guess I need to
give it another name to prevent confusion. For marketing purposes, I'm
calling it Autumn Glow.

Two things I have learned about this glaze in the last month or so. 1) I get a
LOT more of the red tones on brown stoneware than on white or porcelain,
and 2) the slow cool (use 80C per hour from 1000C down to 700C) is
essential for the development of red. Oh, and it loves texture -- I get much
more interesting combinations of color on rippling/carved/altered surfaces.

Chris Schafale

On 7 Dec 2003 at 20:31, Alisa Clausen wrote:

> Glaze test for Caramel Apple, cone 6 oxidation
>
> Glaze tested on white midrange stoneware fired in electric oxidation to 1220c.
>
> Source:Clayart
> Credited to:
>
> Firing ramp:
> 100c p/h to 600c (212f - 1112f)
> 150c p/h to 1100c (330f - 2012f)
> 100c p/h to 1220c (212f - 2228f)
> 5 min. soak
> cool down max. to 800c
> Hold 1 hour
> Shut off kiln
>
> Recipe:
> 16 Frt 3134
> 8 Dolomite
> 16 Spodumene
> 19 Kentucky Old Mine #44 (Ball Clay)
> 5 Bone ASh
> 4 Nytal 100 HR (Talc)
> 32 Silica
>
> ADD
> 15 Red Iron Oxide
>
> Note: All raw materials are measured up or down to the nearest whole decimal.
> Colorants or additives to a 100 gram test batch are measured in precent to the 100 gram test batch.
>
> Substitutions:
> Frit 623 for 3134
> TW Ball Clay for Kentucky Old Mine #44)
> Local Talc for Nytal 100 HR
>
> Results:
> Covering iron red brown semi gloss glaze. The underlying darker color of a brown to black is muted by a variegated shell surface with a greenish cast. Where the glaze is thickest, the color becomes a warmer toffee brown. Where thinnest, the glaze is more even in color, which is a dark
tenmoku-like brown, with black edges. This glaze will could give a good play of color with two different applications on the same work.
>
> Regards from Alisa in Denmark
>
> ______________________________________________________________________________
> 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
(south of Raleigh)
candle@intrex.net
http://www.lightonecandle.com

Ron Roy on wed 10 dec 03


Hi Chris,

I usually say Glaze x revised by RR if I have not altered the moleculat
formula much or changed the materials. If I had done what you did I would
give it a new name. No harm in adding - from the original by XX.

I do agree with your attitude however - credit where due is the right thing
in my mind.

RR

>FYI for anyone trying this glaze. First, the recipe Alisa gives below is NOT
>Greg Lamont's original Caramel Apple, but the variation I posted recently
>(with a lot more silica, based on my Currie test results). I guess I need to
>give it another name to prevent confusion. For marketing purposes, I'm
>calling it Autumn Glow.
>
>Two things I have learned about this glaze in the last month or so. 1) I get a
>LOT more of the red tones on brown stoneware than on white or porcelain,
>and 2) the slow cool (use 80C per hour from 1000C down to 700C) is
>essential for the development of red. Oh, and it loves texture -- I get much
>more interesting combinations of color on rippling/carved/altered surfaces.
>
>Chris Schafale
>
>On 7 Dec 2003 at 20:31, Alisa Clausen wrote:
>
>> Glaze test for Caramel Apple, cone 6 oxidation
>>
>> Glaze tested on white midrange stoneware fired in electric oxidation to
>>1220c.
>>
>> Source:Clayart
>> Credited to:
>>
>> Firing ramp:
>> 100c p/h to 600c (212f - 1112f)
>> 150c p/h to 1100c (330f - 2012f)
>> 100c p/h to 1220c (212f - 2228f)
>> 5 min. soak
>> cool down max. to 800c
>> Hold 1 hour
>> Shut off kiln
>>
>> Recipe:
>> 16 Frt 3134
>> 8 Dolomite
>> 16 Spodumene
>> 19 Kentucky Old Mine #44 (Ball Clay)
>> 5 Bone ASh
>> 4 Nytal 100 HR (Talc)
>> 32 Silica
>>
>> ADD
>> 15 Red Iron Oxide
>>
>> Note: All raw materials are measured up or down to the nearest whole
>>decimal.
>> Colorants or additives to a 100 gram test batch are measured in precent
>>to the 100 gram test batch.
>>
>> Substitutions:
>> Frit 623 for 3134
>> TW Ball Clay for Kentucky Old Mine #44)
>> Local Talc for Nytal 100 HR
>>
>> Results:
>> Covering iron red brown semi gloss glaze. The underlying darker color
>>of a brown to black is muted by a variegated shell surface with a
>>greenish cast. Where the glaze is thickest, the color becomes a warmer
>>toffee brown. Where thinnest, the glaze is more even in color, which is
>>a dark
>tenmoku-like brown, with black edges. This glaze will could give a good
>play of color with two different applications on the same work.
>>
>> Regards from Alisa in Denmark
>>
>>
>>__________________________________________________________________________
>>____
>> 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
>(south of Raleigh)
>candle@intrex.net
>http://www.lightonecandle.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.

Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513