Deepti Agrawal on thu 22 dec 05
Hello Clayarters,
I am a ceramic student in California and looking for a gold- bronze recipe
which can be used in cone 10 gas or electric firing. I have looked around
but couldn't find any to my liking.The only one I can reference to the true
color I want is done by potter Sarah jane willis in UK. But I doubt hers is
a cone 10. If anyone has a close enough glaze that I can try, pls tell me.
Thank you
Deepti
deeptiagrawal@gmail.com
Ivor and Olive Lewis on sat 24 dec 05
Dear Deepti,
If you have searched the archives and the text books without success =
then you have reached the stage where you have to spread your own wings =
and become an inventor of glazes.
I have the feeling that to get any metallic style surface finish from =
firing to Cone 10 that you will need to overload a fairly ordinary, =
reliable cone 10 Transparent High Gloss Glaze with one or more of the =
transitional metal oxides. If you choose to do this be aware that you =
may run into health and safety problems ! ! ! and take adequate =
precautions.
My suggestion would be to create line blend tests with your reliable =
Cone 10 glaze using first,Manganese Dioxide then Black Copper Oxide, the =
10%-20% range, individually and with samples from a line blend of the =
two oxides.
I would anticipate that any successful samples would not be stable and =
would not withstand a leach test with fruit juice or 5% vinegar. Be =
aware you are exploring into the unknown.
A Happy New Year to you.
Best regards,
Ivor Lewis.
Redhill,
South Australia.
Ron Roy on wed 28 dec 05
Hi Deepti,
If you wind up with a glaze oversupplied with Manganese Dioxide - you may
want to do some research on the toxicity of that material. Some of us
believe it has been responsible for posioning some potters.
Dust and kiln fumes are the way of entery - take care.
RR
>I am a ceramic student in California and looking for a gold- bronze recipe
>which can be used in cone 10 gas or electric firing. I have looked around
>but couldn't find any to my liking.The only one I can reference to the true
>color I want is done by potter Sarah jane willis in UK. But I doubt hers is
>a cone 10. If anyone has a close enough glaze that I can try, pls tell me.
>Thank you
>
>Deepti
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Gayle Bair on wed 28 dec 05
Ron,
I have half a 5 gal. bucket with a beautiful black glaze which becomes
iridescent in sunlight. It's a recipe from a friend who threw caution to the
wind... rarely wore a mask, would prove to students how "safe" his glazes
were by dipping his finger in the bucket then licked it off, cleaned the
rugs with a shop vac... that was the last straw so I got out of there and
set up my own studio.
It's ^6 ox with a good deal of Manganese dioxide (sorry I don't have the
recipe with me for exact amt.). I brought it to Tucson where my kiln is
outside. I thought it would be ok to fire it here rather than in WA where my
vented kiln is in the studio. I'd fire at night where there is virtually no
chance for any exposure to fumes.
I haven't used it in years but as I recall it is not a dusty glaze. I would
not spray but rather dip, possibly drip or brush on as an accent glaze.
My studio here is in the garage and I usually keep the garage and another
door open. I figured to use it until there is no more and then switch to
MCSG black. I do not use it for functional pieces.
Should I wear a mask & gloves when glazing? Am I being cautious or
paranoid???
Gayle Bair - watching the hummingbirds find where I have repositioned the
old feeder. One comes to inspect everything I do. When it saw I had arrived
several weeks ago it let me know in no uncertain terms that I had to put out
food..... immediately! Yesterday it was within 3' of me hovering & watching
as I hung the new feeder. Their boldness is astounding. I held one in my
hand last year.... it was as heavy as a baby's breath.
Bainbridge Island, WA
Tucson, AZ
www.claybair.com
-----Original Message-----
From: Ron Roy
Hi Deepti,
If you wind up with a glaze oversupplied with Manganese Dioxide - you may
want to do some research on the toxicity of that material. Some of us
believe it has been responsible for posioning some potters.
Dust and kiln fumes are the way of entery - take care.
RR
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