Alisa Clausen on wed 5 sep 07
Dear Clayart
Now after the summer months of lingering over glaze books instead of glaze
cups
I found this.
I tested Lana's glaze at ^6 because there was nothing in the glaze materials
that particularly suggested low fire to me. Then, there is not much of an
assortment of materials. Later I recognized a similar glaze I had tested at
cone 6. Both recently.
Lana glaze is designated as cone 06 ox. and Pat Horsley's glaze is
designated as cone 6 redux. Pat's glaze has a significant addition of 20%
clay and uses a Feldspar instead of Neph. Syenite for a glaze core, but in
similar proportion. Looking at the analysis below, the glazes will most
likely fire similarly. They do. See photos at
http://www.flickr.com/photos/glazes/sets/ Glaze tests May 7, 2007
I just think it is interesting after reading and testing a lot, that glazes
with names and cone designations, can be an opinion, arbitrary or based on
anything else relevant or not. Nothing earth shattering, but looking at the
analysis and testing is going to tell us what we want to know. How does
this glaze look on my clay and fired in my kiln. How can I develop it and
what can I expect?
Asking for and receiving glazes is OK, a good start. Looking at their
analysis and testing them is simply unavoidable to get to know and
understand the glaze. Yes, it is work and with reward.
Best regards, Alisa in Denmark
Recipe Name: Lana's Purple Aqua Glaze
Cone: 06Recipe Name: Lana's Purple Aqua Glaze
Cone: 06 Color:
Firing: Oxidation Surface: Matte
Amount Ingredient
45 Barium Carbonate
45 Nepheline Syenite
0
90 Total
Additives
4 Frit--Ferro 3124
5 Copper Carbonate
2 Bentonite
Unity Oxide
.217 Na2O
.067 K2O
.003 MgO
.017 CaO
.695 BaO
1.000 Total
.314 Al2O3
.001 Fe2O3
1.389 SiO2
4.4 Ratio
10.8 Exp
Recipe Name: 1911 Purple/Blue Redux. Pat Horsley
Cone: 6 Color:
Firing: Reduction Surface: Matte
Amount Ingredient
40 Barium Carbonate
40 Feldspar--Custer
2 Ball Clay--C & C
18 Kaolin--EPK
100 Total
Additives
6 Copper Carbonate
Unity Oxide
.073 Na2O
.162 K2O
.002 MgO
.01 CaO
.752 BaO
1.000 Total
.515 Al2O3
.005 Fe2O3
2.298 SiO2
.004 TiO2
.001 P2O5
4.5 Ratio
9.2 Exp
Arthur Lee on wed 5 sep 07
Dear Alisa,
Thank you for your posting: you've inspired me to do more testing of my own.
Looking through the test tiles you posted, the VTenmoku Gold Close and the
Honey Green Faux Celadon are really beautiful. Would you be willing to share
the recipes? I'd very much like to try them out.
Arthur in Englewood
On 9/5/07, Alisa Clausen wrote:
>
> Dear Clayart
> Now after the summer months of lingering over glaze books instead of
> glaze
> cups
> I found this.
>
> I tested Lana's glaze at ^6 because there was nothing in the glaze
> materials
> that particularly suggested low fire to me. Then, there is not much of
> an
> assortment of materials. Later I recognized a similar glaze I had tested
> at
> cone 6. Both recently.
>
> Lana glaze is designated as cone 06 ox. and Pat Horsley's glaze is
> designated as cone 6 redux. Pat's glaze has a significant addition of
> 20%
> clay and uses a Feldspar instead of Neph. Syenite for a glaze core, but in
> similar proportion. Looking at the analysis below, the glazes will most
> likely fire similarly. They do. See photos at
> http://www.flickr.com/photos/glazes/sets/ Glaze tests May 7, 2007
>
> I just think it is interesting after reading and testing a lot, that
> glazes
> with names and cone designations, can be an opinion, arbitrary or based on
> anything else relevant or not. Nothing earth shattering, but looking at
> the
> analysis and testing is going to tell us what we want to know. How does
> this glaze look on my clay and fired in my kiln. How can I develop it and
> what can I expect?
>
> Asking for and receiving glazes is OK, a good start. Looking at their
> analysis and testing them is simply unavoidable to get to know and
> understand the glaze. Yes, it is work and with reward.
> Best regards, Alisa in Denmark
>
>
>
>
>
> Recipe Name: Lana's Purple Aqua Glaze
>
> Cone: 06Recipe Name: Lana's Purple Aqua Glaze
>
> Cone: 06 Color:
> Firing: Oxidation Surface: Matte
>
> Amount Ingredient
> 45 Barium Carbonate
> 45 Nepheline Syenite
> 0
>
> 90 Total
>
> Additives
> 4 Frit--Ferro 3124
> 5 Copper Carbonate
> 2 Bentonite
>
> Unity Oxide
> .217 Na2O
> .067 K2O
> .003 MgO
> .017 CaO
> .695 BaO
> 1.000 Total
>
> .314 Al2O3
> .001 Fe2O3
>
> 1.389 SiO2
>
> 4.4 Ratio
> 10.8 Exp
>
>
>
> Recipe Name: 1911 Purple/Blue Redux. Pat Horsley
>
> Cone: 6 Color:
> Firing: Reduction Surface: Matte
>
> Amount Ingredient
> 40 Barium Carbonate
> 40 Feldspar--Custer
> 2 Ball Clay--C & C
> 18 Kaolin--EPK
>
> 100 Total
>
> Additives
> 6 Copper Carbonate
>
> Unity Oxide
> .073 Na2O
> .162 K2O
> .002 MgO
> .01 CaO
> .752 BaO
> 1.000 Total
>
> .515 Al2O3
> .005 Fe2O3
>
> 2.298 SiO2
> .004 TiO2
> .001 P2O5
>
> 4.5 Ratio
> 9.2 Exp
>
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
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>
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> melpots2@visi.com
> owner-cla
>
--
Arthur Lee
Englewood, Florida
arlee3@gmail.com
Alisa Clausen on thu 6 sep 07
Hi Arthur
All of the recipes are in the archives under
glaze test for (insert name).
I am working on getting all of the recipes listed with the Flickr photos.
The Vs Tenmoku is beautiful and I would like you to try it with Petalite
and then again with Spodumene, or mixes of both,
instead of Lithium. I made tests with gram for gram subs with very
similar and good results with both subbed materials. Steve Slatlin and I
made several tests. I got
the Honey Faux Celedon from Don Goodridge at NCECA and it was also a nice
glaze. There can be noticiable color variations with application.
Look at the flickr page in a few days again or go to the archives. If you
need help just write to me off line at alisaclausen@gmail.com
Best regards
Alisa in Denmark
You are in Englewood? I was born in Englewood, N.J. Maybe you are in Ca.
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