The Buchanans on wed 9 dec 98
O.K. If you''ll share results here is METALLIC BLACK GLAZE WITH SILVER
AND GOLD CRYSTALS ^5,6,7and8 (oxidation only)
nepheline syenite 73
zinc oxide 3
dolomite 5
whiting 4
china clay 4
bentonite 3
flint 8
rutile (medium) 10
ilmenite (fine) 10
copper carbonate 4
Good luck, Judi B.
=20
tmartens on thu 10 dec 98
I could not believe I was seeing one of my old glaze friends here on
Clayart.On it's own it is a dull matte gumetal - ish colour. BUT the
chemical alnalysis of my dolomite and neph sye and such are very
different to those commonly used in North America. Makes a huge
difference. I did not get any crystals either, but soaking is a bit
of a problem for me although I am finally learning the vagaries of my
pyrometer. That probably means it is near it's end and I will have to
break in a new one soon. Sigh
However used over a dolomite white glaze it produces very interesting
results, it looks almost like a lichen growth on the white. I don't
use it on food functional ware but on sculpture it gives an earthy,
organic look.
Used either over or under Frosty White Crystal it produces a somewhat
runny, highly variegated turqouise, anything from a pastel turquoise
to a dark teal, all on the same piece. Very dramatic.
I have not used it in a while, seeing it here has inspired me to play
with it some more.
Toni Martens Durban South Africa
----------------------------Original message----------------------------
O.K. If you''ll share results here is METALLIC BLACK GLAZE WITH SILVER
AND GOLD CRYSTALS ^5,6,7and8 (oxidation only)
nepheline syenite 73
zinc oxide 3
dolomite 5
whiting 4
china clay 4
bentonite 3
flint 8
rutile (medium) 10
ilmenite (fine) 10
copper carbonate 4
Good luck, Judi B.
=20
John Fazzino on fri 11 dec 98
Hii Tony, Could you provide a little more background info on this process?
From the original message with just the recipe, I was led to understand I
could just fire it up in Ox with no other glaze or soaking as other crystal
glazes require. Thanks John Fazzino
In a message dated 12/10/98 1:37:53 PM, tmartens@jhb-proxy.mweb.co.za writes:
<Clayart.On it's own it is a dull matte gumetal - ish colour. BUT the
chemical alnalysis of my dolomite and neph sye and such are very
different to those commonly used in North America. Makes a huge
difference. I did not get any crystals either, but soaking is a bit
of a problem for me although I am finally learning the vagaries of my
pyrometer. That probably means it is near it's end and I will have to
break in a new one soon. Sigh
However used over a dolomite white glaze it produces very interesting
results, it looks almost like a lichen growth on the white. I don't
use it on food functional ware but on sculpture it gives an earthy,
organic look.
Used either over or under Frosty White Crystal it produces a somewhat
runny, highly variegated turqouise, anything from a pastel turquoise
to a dark teal, all on the same piece. Very dramatic.
I have not used it in a while, seeing it here has inspired me to play
with it some more.
Toni Martens Durban South Africa
----------------------------Original message----------------------------
O.K. If you''ll share results here is METALLIC BLACK GLAZE WITH SILVER
AND GOLD CRYSTALS ^5,6,7and8 (oxidation only)
nepheline syenite 73
zinc oxide 3
dolomite 5
whiting 4
china clay 4
bentonite 3
flint 8
rutile (medium) 10
ilmenite (fine) 10
copper carbonate 4
Good luck, Judi B.
=20
>>
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