Bill Merrill on mon 26 apr 10
I have sent this to Clayart in the past, so this may be lurking around
somewhere in Clay heaven..
=3D20
This raku glaze is a recreation of an original glaze by using powdered
gravel from the river Kamo for the introduction of Lithium to the glaze.
Richard Beherns formulated this glaze. The glaze matures at cone 016.
Floating tints had a softened brilliance that made the glaze popular for
the Zen Buddhist tea ceremony. Lithium does not distort the color in
this case. The more ancient Raku used reds and black while the master
Kenzan made a bright apple green by adding copper carbonate. Because of
lithiums thermal stability, there is less chance of breaking. Lithium
lowers the coefficient of expansion, which means that shrinkage problems
are minimized.
=3D20
Try using different colorants and opacificers with this glaze...
=3D20
43.6 Frit 25 =3D20
=3D20
26.3 Frit 3134
=3D20
9.9 Lithium Carbonate
=3D20
6.2 China clay (EPK)
=3D20
14 Flint
=3D20
You may need to find Frits of the same composition if these frits are
not available.
=3D20
Bill
=3D20
I found my original post on this glaze from 2008. John Britt wrote me
and said the following:
=3D20
Bill,=3D20
That glaze is a.k.a. Raku Turquoise with 3.5% Copper Carb. It is listed
=3D3D ( Richard Behrenss formulated this glaze)
in Chappell's book.=3D20
He has about 15 color variants including Blue Silver, etc.=3D20
=3D3D20=3D20
Nice glaze!=3D20
Thanks,=3D20
John Britt=3D20
www.johnbrittpottery.com/wks.htm=3D20
http://ncclayclub.blogspot.com/
=3D20
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=3D20
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=3D20
=3D20
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=3D20
Eric Hansen on mon 26 apr 10
Bill: HEY! In fact I have googled kamogawa ishi several times - so there ha=
s
been some research done - good - but I'm still wondering what the stone
actually is - obviously high in lithium as well as dark minerals.
h a n s e n
On Mon, Apr 26, 2010 at 4:56 PM, Bill Merrill wrote:
> I have sent this to Clayart in the past, so this may be lurking around
> somewhere in Clay heaven..
>
>
>
> This raku glaze is a recreation of an original glaze by using powdered
> gravel from the river Kamo for the introduction of Lithium to the glaze.
> Richard Beherns formulated this glaze. The glaze matures at cone 016.
> Floating tints had a softened brilliance that made the glaze popular for
> the Zen Buddhist tea ceremony. Lithium does not distort the color in
> this case. The more ancient Raku used reds and black while the master
> Kenzan made a bright apple green by adding copper carbonate. Because of
> lithiums thermal stability, there is less chance of breaking. Lithium
> lowers the coefficient of expansion, which means that shrinkage problems
> are minimized.
>
>
>
> Try using different colorants and opacificers with this glaze...
>
>
>
> 43.6 Frit 25
>
>
>
> 26.3 Frit 3134
>
>
>
> 9.9 Lithium Carbonate
>
>
>
> 6.2 China clay (EPK)
>
>
>
> 14 Flint
>
>
>
> You may need to find Frits of the same composition if these frits are
> not available.
>
>
>
> Bill
>
>
>
> I found my original post on this glaze from 2008. John Britt wrote me
> and said the following:
>
>
>
> Bill,
>
> That glaze is a.k.a. Raku Turquoise with 3.5% Copper Carb. It is listed
> =3D ( Richard Behrenss formulated this glaze)
> in Chappell's book.
> He has about 15 color variants including Blue Silver, etc.
> =3D20
> Nice glaze!
>
> Thanks,
>
> John Britt
> www.johnbrittpottery.com/wks.htm
> http://ncclayclub.blogspot.com/
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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