Charles and Tamara Schulz on sat 30 aug 97
I'm looking for a matt blue-green glaze, kind of copper green looking than
can be fired at ^9-10 in reduction and is food safe. any ideas?
thanks.
Tamara
David Hendley on sun 31 aug 97
This has been around for decades and is very dependable.
When I got it at college it was called "Peacock blue".
I would call it a blue-green turquoise.
Nice buttery magnesia matt.
SODA FELDSPAR.......34
GER. BORATE............12
WHITING....................7
EPK KAOLIN...............9
TALC...........................19
FLINT.........................19
ADD:
COBALT OXIDE .30
CHROME OXIDE .50
At 09:25 AM 8/30/97 EDT, you wrote:
>----------------------------Original message----------------------------
>I'm looking for a matt blue-green glaze, kind of copper green looking than
>can be fired at ^9-10 in reduction and is food safe. any ideas?
>thanks.
>
>Tamara
David Hendley
Maydelle, Texas
See David Hendley's Pottery Page at
http://www.sosis.com/hendley/david/
Grimmer on sun 31 aug 97
Tamara,
My all time favorite is Val Cushing's AA, aka Dianne's Blue
Black. Foodsafe? I suppose. Oxidation, reduction, wood, salt,
whatever.
Cushing AA
46 Cornwall Stone
34 Whiting
20 EPK
add
4 copper Carb
optional
4 tin
This one is great to do color tests on.
steve grimmer
marion illinois
Charles and Tamara Schulz wrote:
>
> ----------------------------Original message----------------------------
> I'm looking for a matt blue-green glaze, kind of copper green looking than
> can be fired at ^9-10 in reduction and is food safe. any ideas?
> thanks.
>
> Tamara
Ron Roy on mon 1 sep 97
The following glaze, which has been suggested as food safe, may or may not
be - depending on your reaction to the oxides which will be released when
in contact with certain foods. The glaze is short of alumina and seriously
short of silica. It is also oversupplied with MgO for a cone 9/10 glaze.
Be prepared for loss of colour when in contact with some foods. RR
>----------------------------Original message----------------------------
>This has been around for decades and is very dependable.
>When I got it at college it was called "Peacock blue".
>I would call it a blue-green turquoise.
>Nice buttery magnesia matt.
>
>SODA FELDSPAR.......34
>GER. BORATE............12
>WHITING....................7
>EPK KAOLIN...............9
>TALC...........................19
>FLINT.........................19
>ADD:
>COBALT OXIDE .30
>CHROME OXIDE .50
>
>At 09:25 AM 8/30/97 EDT, you wrote:
>>----------------------------Original message----------------------------
>>I'm looking for a matt blue-green glaze, kind of copper green looking than
>>can be fired at ^9-10 in reduction and is food safe. any ideas?
>>thanks.
>>
>>Tamara
Ron Roy
Toronto, Canada
Evenings, call 416 439 2621
Fax, 416 438 7849
Studio: 416-752-7862.
Email ronroy@astral.magic.ca
Home page http://digitalfire.com/education/people/ronroy.htm
Ron Roy on mon 1 sep 97
This glaze is oversupplied with CaO and way under in silica. Is it food
safe? - I don't know - it will release copper when in contact with certain
foods. I suspect it will craze on most bodies. I also know it will change
colour when in contact with some foods.
RR
>----------------------------Original message----------------------------
>Tamara,
> My all time favorite is Val Cushing's AA, aka Dianne's Blue
>Black. Foodsafe? I suppose. Oxidation, reduction, wood, salt,
>whatever.
>
>Cushing AA
>46 Cornwall Stone
>34 Whiting
>20 EPK
>add
>4 copper Carb
>optional
>4 tin
>> ----------------------------Original message----------------------------
>> I'm looking for a matt blue-green glaze, kind of copper green looking than
>> can be fired at ^9-10 in reduction and is food safe. any ideas?
>> thanks.
>>
>> Tamara
Ron Roy
Toronto, Canada
Evenings, call 416 439 2621
Fax, 416 438 7849
Studio: 416-752-7862.
Email ronroy@astral.magic.ca
Home page http://digitalfire.com/education/people/ronroy.htm
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