Kate Johnson on sat 7 may 05
Ron Roy just gave another warning on manganese--I've seen several lately,
but a number of my books have slip and glaze recipes with that ingredient.
I've used it to create a nice, dark slip for my marbleware, mixed into a red
earthenware slip--you've got my attention, what can I use instead? Arroyo
slip (the substitute for Albany slip, from Laguna, I think)? Black Mason
stain?
I use the slip on low fire terra cotta...thank you, in advance...
Best--
Kate Johnson
graphicart@epsi.net
http://www.cathyjohnson.info/
Art, History, Nature and More at Cathy Johnson's Cafepress--
http://www.cafepress.com/cathy_johnson/
Graphics/Fine Arts Press--
http://www.epsi.net/graphic/
Snail Scott on sun 8 may 05
At 08:56 PM 5/7/2005 -0500, you wrote:
>Ron Roy just gave another warning on manganese--I've seen several lately,
>but a number of my books have slip and glaze recipes with that ingredient.
>I've used it to create a nice, dark slip for my marbleware, mixed into a red
>earthenware slip--you've got my attention, what can I use instead?
I wouldn't worry excessively. The biggest hazard is
from fumes during firing, so if you don't have your
kiln in your workspace, and you don't hang around it
while you fire (or afterward), the risk should be
mininal.
If you do share space with your kiln, or you want
to ditch the manganese anyway, a dark stain may be
your best choice.
-Snail
Kate Johnson on sun 8 may 05
Hi Snail, and those who've answered offlist...thank you!
All, Bonnie H. suggested I might want to steer clear of black stains with
cobalt in them, since it's so strong and may take on a bluish hue...hadn't
thought of that, and thank you, Bonnie.
> At 08:56 PM 5/7/2005 -0500, you wrote:
>>Ron Roy just gave another warning on manganese--
> I wouldn't worry excessively. The biggest hazard is
> from fumes during firing, so if you don't have your
> kiln in your workspace, and you don't hang around it
> while you fire (or afterward), the risk should be
> mininal.
Nope, shouldn't be a problem--kiln is in a closed, cement block room with a
huge exhaust system, at school.
>
> If you do share space with your kiln, or you want
> to ditch the manganese anyway, a dark stain may be
> your best choice.
I'm thinking I will try something else (I got a very nice dark early on with
Arroyo slip, but it doesn't seem to want to go quite as dark as I like now.
NO idea why...), but finish the set of dinnerware I'm on now, so they
match...thank you again!
Best--
Kate Johnson
graphicart@epsi.net
http://www.cathyjohnson.info/
Art, History, Nature and More at Cathy Johnson's Cafepress--
http://www.cafepress.com/cathy_johnson/
Graphics/Fine Arts Press--
http://www.epsi.net/graphic/
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