Heidi Haugen on tue 8 feb 05
Hi Llewellyn,
Funny that you should bring this up today. I spent some time this
afternoon at the Shaner Retrospective show that is at our local museum.
Shaner's home was about 30 miles down the road from here.
The maria glaze is quite amazing up close, nice random crystals on matte
black. The recipe is 30% manganese and some have speculated that his
years of using this led to his illness...so maybe if you really wanted
to pursue it you could redo the glaze. sounds also like it was pretty
finicky...good on handbuilt shoulder pieces, not so good on bowls and
whatnot.
Anyhow..that's what I know. Anyone who's within an afternoon's drive to
Kalispell Montana may want to check out this show....small but amazing.
Heidi Haugen West Glacier, MT USA.
Llewellyn Kouba on tue 8 feb 05
I was looking through some old Ceramic Monthly and found a photo of a
work by David Shaner where he made use of a glaze called Maria Glaze ,
fired to cone 10 in reduction. Does anyone know if this glaze formula
is out there and available for use?
Llewellyn Kouba
Liz Willoughby on wed 9 feb 05
>I was looking through some old Ceramic Monthly and found a photo of a
>work by David Shaner where he made use of a glaze called Maria Glaze ,
>fired to cone 10 in reduction. Does anyone know if this glaze formula
>is out there and available for use?
>
Llewellyn Kouba
Hello Llewellyn,
The Maria Glaze was a glaze formulated by David Shaner with 30%
manganese in it. As you might know, David died from Amyotrophic
Lateral Sclerosis (ALS or Lou Gerhig's disease). There is a Studio
Potter Monograph, in the issue of The Studio Potter, Vol.28 Number 1,
written by David Shaner. He strongly believed that the high levels
of manganese levels in his body was a contributing factor to his
disease. His gas kiln was in his studio, and he kept the kiln in
heavy reduction, and the fumes were loaded with manganese. He had 5
times the normal amount of manganese in his body after the first
testing. After 5 mos of intermittent chelation therapy, his
manganese levels were still high.
A tragic story, and because the symptoms of manganese poisoning is
similar to ALS, it would be prudent to stay away from using manganese
in your glazes, or at least high percentages of manganese in your
glazes or your clay body for that matter.
It is a beautiful glaze, black with crystals.
Best regards,
--
Meticky Liz from Grafton, Ontario, Canada
You must believe in Spring
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