Hank Murrow on thu 21 aug 08
Dear Group;
Mogusa clay and the western approximations I have devised and used
all have a singular behavior when glazed...... they bubble and pit
from the escaping air bubbling through the wet glaze. that is the
source of those 'pits' you see in the pics of old pots. Thick
application of high clay glazes promotes the crawling, especially if
you fire soon after glazing.
Cheers, Hank
Lee Love on fri 22 aug 08
On Fri, Aug 22, 2008 at 12:12 PM, Hank Murrow wrote:
> Dear Group;
>
> Mogusa clay and the western approximations I have devised and used
> all have a singular behavior when glazed...... they bubble and pit
The higher alumina is essential in trying to make a clay like mogusa.
It is one of the reasons it bubbles and pits: the relative bisque
temperature for the high alumina clay is very low.
If you do not add alumina, you can easily get the
pinholing and crawling by using a very low bisque. I bisque at 012
and lower. On pots you don't want to pin hole, you simply sponge
with water.
--
Lee Love in Minneapolis
http://mashikopots.blogspot.com/
http://claycraft.blogspot.com/
"Let the beauty we love be what we do.
There are hundreds of ways to kneel and kiss the ground." --Rumi
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