Russel Fouts on sun 11 oct 09
Does anyone have the recipe for the David Shaner's Maria Glaze?
I've only seen it in pictures but it's SUCH a beautiful glaze.
Also, article mention that it was fired in heavy reduction so is
there also a special firing process? (aside from making sure your
kiln is properly vented to deal with the manganese).
Russel
Russel Fouts
Mes Potes & Mes Pots
Brussels, Belgium
Tel: +32 2 223 02 75
Mobile: +32 476 55 38 75
http://www.mypots.com
Home of "The Potters Portal"
Over 3000 Pottery Related Links!
Updated infrequently
"Look, it's my misery that I have to paint this kind of painting,
it's your misery that you have to love it, and the price of the
misery is thirteen hundred and fifty dollars. "
- Mark Rothko, In Art/Painting
Jennifer Boyer on mon 12 oct 09
I found a reference to it in an old Clayart post, but not the recipe.
It did mention it had 30% manganese!! Not worth the risk in my
opinion. No venting system gets all the fumes out.
Jennifer
On Oct 11, 2009, at 12:46 PM, Russel Fouts wrote:
> Does anyone have the recipe for the David Shaner's Maria Glaze?
>
> I've only seen it in pictures but it's SUCH a beautiful glaze.
>
> Also, article mention that it was fired in heavy reduction so is
> there also a special firing process? (aside from making sure your
> kiln is properly vented to deal with the manganese).
>
> Russel
>
>
>
> Russel Fouts
> Mes Potes & Mes Pots
> Brussels, Belgium
> Tel: +32 2 223 02 75
> Mobile: +32 476 55 38 75
>
> http://www.mypots.com
> Home of "The Potters Portal"
> Over 3000 Pottery Related Links!
> Updated infrequently
>
>
> "Look, it's my misery that I have to paint this kind of painting,
> it's your misery that you have to love it, and the price of the
> misery is thirteen hundred and fifty dollars. "
>
> - Mark Rothko, In Art/Painting
***************************
Jennifer Boyer
Thistle Hill Pottery
Montpelier, VT
thistlehillpottery.com
jboyerdesign.com
artisanshand.com
***************************
Lee Love on mon 12 oct 09
Des asked for a citation. I quote Edouard:
Edouard Bastarache Inc. on fri 11 apr 08
Bill,
I will make a few comments :
1-Blood manganese is not a Biological Esposure Index (B.E.I.)
A B.E.I. relates directly to the severity of exposure of the
patient. It means if you do no have the means to measure the
exposure, the B.E.I. is sufficient. This the case
for lead not manganese.
2-Parkinson-like disease is the only clinical
entity generally accepted and caused by over-exposure to manganese.
3-In Parkinson's, tremors appear at rest while in Parkinson- like they
are intentional.
4-Often times the only clue to diagnosis is a history of exposure
to manganese. 5-Manganese fumes appear 5 times more toxic than the dust.
Fumes =3D3D 1 mg/m=3DB3 Dust and Compounds =3D3D 5 mg/m=3DB3
Liz Willoughby on wed 9 feb 05 wrote:
=3DA0 =3DA0Hello Llewellyn,
=3DA0 =3DA0The Maria Glaze was a glaze formulated by David Shaner with 30%
=3DA0 =3DA0manganese in it. As you might know, David died from Amyotrophic
=3DA0 =3DA0Lateral Sclerosis (ALS or Lou Gerhig's disease). There is a Stud=
io
=3DA0 =3DA0Potter Monograph, in the issue of The Studio Potter, Vol.28 Numb=
er 1=3D
,
=3DA0 =3DA0written by David Shaner. He strongly believed that the high leve=
ls
=3DA0 =3DA0of manganese levels in his body was a contributing factor to his
=3DA0 =3DA0disease. His gas kiln was in his studio, and he kept the kiln in
=3DA0 =3DA0heavy reduction, and the fumes were loaded with manganese. He ha=
d 5
=3DA0 =3DA0times the normal amount of manganese in his body after the first
=3DA0 =3DA0testing. After 5 mos of intermittent chelation therapy, his
=3DA0 =3DA0manganese levels were still high.
=3DA0 =3DA0A tragic story, and because the symptoms of manganese poisoning =
is
=3DA0 =3DA0similar to ALS, it would be prudent to stay away from using mang=
anes=3D
e
=3DA0 =3DA0in your glazes, or at least high percentages of manganese in you=
r
=3DA0 =3DA0glazes or your clay body for that matter.
=3DA0 =3DA0It is a beautiful glaze, black with crystals.
=3DA0 =3DA0Best regards,
=3DA0 =3DA0--
=3DA0 =3DA0Meticky Liz from Grafton, Ontario, Canada
=3DA0 =3DA0You must believe in Spring
--
Lee Love, Minneapolis
"The tea ceremony bowl is the ceramic equivalent of a sonnet: a
small-scale, seemingly constricted form that challenges the artist to
go beyond mere technical virtuosity and find an approach that both
satisfies and transcends the conventions." -- Rob Sliberman
full essay: http://togeika.multiply.com/journal/item/273/
Des & Jan Howard on tue 13 oct 09
Lee
Thanks for that.
Edouard's comments I can accept.
Des
Lee Love wrote:
> Des asked for a citation. I quote Edouard:
> Edouard Bastarache Inc. on fri 11 apr 08
> 1-Blood manganese is not a Biological Esposure Index (B.E.I.)
> A B.E.I. relates directly to the severity of exposure of the
> patient. It means if you do no have the means to measure the
> exposure, the B.E.I. is sufficient. This the case
> for lead not manganese.
>
> 2-Parkinson-like disease is the only clinical
> entity generally accepted and caused by over-exposure to manganese.
>
> 3-In Parkinson's, tremors appear at rest while in Parkinson- like they
> are intentional.
>
> 4-Often times the only clue to diagnosis is a history of exposure
> to manganese. 5-Manganese fumes appear 5 times more toxic than the dust.
> Fumes =3D 1 mg/m=B3 Dust and Compounds =3D 5 mg/m=B3
--
Des & Jan Howard
Lue Pottery
Lue NSW
Australia
2850
02 6373 6419
www.luepottery.hwy.com.au
-32.656072 149.840624
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