Alisa Clausen on sat 13 sep 08
Hi Clayart
This is a base I have worked with colored with about 30 combinations of
colorants.
They are at http://www.flickr.com/photos/glazes/sets/
Many of the tests have interesting edges where the glaze is thinner, with a
lot of color nuances. In general, the glaze base is a semi gloss, and when
both Rutile and Titanium were added, the glaze got a fatter feel and look.
I think it is a base I will work with. The base itself as a clear, needs to
be screened and applied at least twice for a smooth silk mat surface.
Best regards, Alisa in Denmark
Recipe Name: Alisa Butter Base
Cone: 6 Color:
Firing: Oxidation Surface: Semiglossy
Amount Ingredient
59.2 Nepheline Syenite
6.6 Talc
7.9 Dolomite
26.3 Ball Clay--Kentucky Stone
100 Total
Unity Oxide
.332 Na2O
.115 K2O
.332 MgO
.221 CaO
1.000 Total
.666 Al2O3
.009 Fe2O3
3.355 SiO2
.016 TiO2
5 Ratio
7.7 Exp
Comments: Glaze made because I mixed WoDo 40/10 wrong and could remember my
mistake. The initial mistake glaze looked semi mat which is a base I have
been trying to get. After some changes to get the Silica higher, I made
this base.
Overall a smooth surface, butter sheen, fattens up with additions of Rutile
and Titanium. Can get glossier with some oxide mix addtions. Copper gives
some oil spot effects, dark and browns. Good color results with Cobalt and
Opacifiers. Must look at edges, and closely overall, as there are many
color nunances and changes. Some high fire looks as well.
Ron Roy on thu 18 sep 08
Hi Alisa,
I'm trying to figure out why this glaze melted at cone 6 - could it be one
of those underfired matte glazes?
Note the amount of alumina at .67 - which is way over any limits even for a
cone 10.
If so it will not be stable - have you done any testing to see if it
changes colour and texture with acid?
Best regards - RR
>Hi Clayart
>This is a base I have worked with colored with about 30 combinations of
>colorants.
>They are at http://www.flickr.com/photos/glazes/sets/
>Many of the tests have interesting edges where the glaze is thinner, with a
>lot of color nuances. In general, the glaze base is a semi gloss, and when
>both Rutile and Titanium were added, the glaze got a fatter feel and look.
>I think it is a base I will work with. The base itself as a clear, needs to
>be screened and applied at least twice for a smooth silk mat surface.
>
>Best regards, Alisa in Denmark
>
>
>
>Recipe Name: Alisa Butter Base
>Cone: 6 Color:
>Firing: Oxidation Surface: Semiglossy
>Amount Ingredient
>59.2 Nepheline Syenite
>6.6 Talc
>7.9 Dolomite
>26.3 Ball Clay--Kentucky Stone
>100 Total
>
>Unity Oxide
>.332 Na2O
>.115 K2O
>.332 MgO
>.221 CaO
>1.000 Total
>.666 Al2O3
>.009 Fe2O3
>3.355 SiO2
>.016 TiO2
>5 Ratio
>7.7 Exp
>
>Comments: Glaze made because I mixed WoDo 40/10 wrong and could remember my
>mistake. The initial mistake glaze looked semi mat which is a base I have
>been trying to get. After some changes to get the Silica higher, I made
>this base.
>Overall a smooth surface, butter sheen, fattens up with additions of Rutile
>and Titanium. Can get glossier with some oxide mix addtions. Copper gives
>some oil spot effects, dark and browns. Good color results with Cobalt and
>Opacifiers. Must look at edges, and closely overall, as there are many
>color nunances and changes. Some high fire looks as well.
Ron Roy
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Alisa Clausen on fri 19 sep 08
Hi Ron
I am aware of the high alumina content and had been admiring the melt of the
glaze, despite this balance. I have a few tiles in acid tests at the moment
and will report. It is definately not underfired as it is quite a nice silk
gloss or silk semi mat. It does have a look of a much higher fired glaze.
I, at the moment, think it is a very lucky hit for my work. But the acid
tests might tell more. Thanks for your comments Ron.
Best regards, Alisa
On Thu, Sep 18, 2008 at 11:26 PM, Ron Roy wrote:
> Hi Alisa,
>
> I'm trying to figure out why this glaze melted at cone 6 - could it be one
> of those underfired matte glazes?
>
> Note the amount of alumina at .67 - which is way over any limits even for a
> cone 10.
>
> If so it will not be stable - have you done any testing to see if it
> changes colour and texture with acid?
>
> Best regards - RR
>
> >Hi Clayart
> >This is a base I have worked with colored with about 30 combinations of
> >colorants.
> >They are at http://www.flickr.com/photos/glazes/sets/
> >Many of the tests have interesting edges where the glaze is thinner, with
> a
> >lot of color nuances. In general, the glaze base is a semi gloss, and
> when
> >both Rutile and Titanium were added, the glaze got a fatter feel and look.
> >I think it is a base I will work with. The base itself as a clear, needs
> to
> >be screened and applied at least twice for a smooth silk mat surface.
> >
> >Best regards, Alisa in Denmark
> >
> >
> >
> >Recipe Name: Alisa Butter Base
> >Cone: 6 Color:
> >Firing: Oxidation Surface: Semiglossy
> >Amount Ingredient
> >59.2 Nepheline Syenite
> >6.6 Talc
> >7.9 Dolomite
> >26.3 Ball Clay--Kentucky Stone
> >100 Total
> >
> >Unity Oxide
> >.332 Na2O
> >.115 K2O
> >.332 MgO
> >.221 CaO
> >1.000 Total
> >.666 Al2O3
> >.009 Fe2O3
> >3.355 SiO2
> >.016 TiO2
> >5 Ratio
> >7.7 Exp
> >
> >Comments: Glaze made because I mixed WoDo 40/10 wrong and could remember
> my
> >mistake. The initial mistake glaze looked semi mat which is a base I have
> >been trying to get. After some changes to get the Silica higher, I made
> >this base.
> >Overall a smooth surface, butter sheen, fattens up with additions of
> Rutile
> >and Titanium. Can get glossier with some oxide mix addtions. Copper gives
> >some oil spot effects, dark and browns. Good color results with Cobalt
> and
> >Opacifiers. Must look at edges, and closely overall, as there are many
> >color nunances and changes. Some high fire looks as well.
>
> Ron Roy
> 15084 Little Lake Road
> Brighton, Ontario
> Canada
> K0K 1H0
>
Ron Roy on tue 23 sep 08
Hi Alisa,
I hope it is well melted - It would be wonderful to have a well melted cone
6 glaze without having to use a frit, boron or Zinc. I wonder if you have
hit on some sort of ideal melting ratio - eutectic mixture - that would be
a step forward for all those who fire at cone 6.
RR
>Hi Ron
>I am aware of the high alumina content and had been admiring the melt of the
>glaze, despite this balance. I have a few tiles in acid tests at the moment
>and will report. It is definately not underfired as it is quite a nice silk
>gloss or silk semi mat. It does have a look of a much higher fired glaze.
>I, at the moment, think it is a very lucky hit for my work. But the acid
>tests might tell more. Thanks for your comments Ron.
>
>Best regards, Alisa
>
>On Thu, Sep 18, 2008 at 11:26 PM, Ron Roy wrote:
>
>> Hi Alisa,
>>
>> I'm trying to figure out why this glaze melted at cone 6 - could it be one
>> of those underfired matte glazes?
>>
>> Note the amount of alumina at .67 - which is way over any limits even for a
>> cone 10.
>>
>> If so it will not be stable - have you done any testing to see if it
>> changes colour and texture with acid?
>>
>> Best regards - RR
>>
>> >Hi Clayart
>> >This is a base I have worked with colored with about 30 combinations of
>> >colorants.
>> >They are at http://www.flickr.com/photos/glazes/sets/
>> >Many of the tests have interesting edges where the glaze is thinner, with
>> a
>> >lot of color nuances. In general, the glaze base is a semi gloss, and
>> when
>> >both Rutile and Titanium were added, the glaze got a fatter feel and look.
>> >I think it is a base I will work with. The base itself as a clear, needs
>> to
>> >be screened and applied at least twice for a smooth silk mat surface.
>> >
>> >Best regards, Alisa in Denmark
>> >
>> >
>> >
>> >Recipe Name: Alisa Butter Base
>> >Cone: 6 Color:
>> >Firing: Oxidation Surface: Semiglossy
>> >Amount Ingredient
>> >59.2 Nepheline Syenite
>> >6.6 Talc
>> >7.9 Dolomite
>> >26.3 Ball Clay--Kentucky Stone
>> >100 Total
Ron Roy
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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