Steve Bogue on tue 21 mar 06
Can it be possible to have a workably functional shino in regards to
fit .Is the crazing just inevitable with the high sodium or can it be
balanced and fit well enough to a body to suffice in say a mug or ??? I
always have loved is simplicity and variety, I'm just not sure of its
durability.
Thanks again !
David Woof on wed 22 mar 06
I use a "fat" white shino which has it's roots in the Minnesota shinos Lee
mentioned and aside some tweeking can be attributed to a widely known
minnesota potter. At times, in wood fire conditions, beautiful patterns of
large pin hole craters with carbon trapping and orange blush flashing
appear. Inside larger open bowls where light can play it is very pleasing.
I use shino on functional ware and these characteristics of gratering,
crawling, and crazing I manipulate and utilize with aesthetic intention.
A crazing glaze is a "flaw" until one learns how to cause or correct it and
then a crazing glaze is an artistic choice and now becomes a "crackle" glaze
deliberately sought for it's unique expressive quality.
Anticipating kneejerk regarding crazed functional ware; this is for those
folks who recoil in horror at the imagination of ferocious microscopic
beasties growng in the canyons of crazed pottery...better hurry down to yer
local dentist for a complete and radical extraction because there are
thousands times more of the little beasties living contentedly between your
teeth and flying up your nose on the everywhere daily airborne dust and
pollution than ever will live to cause harm in a clean, aged and crazed bowl
or mug.
The really dangerous things aren't in the studio. What we fear usually kills
us.
David
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David Woof Studio
Clarkdale, Arizona
Ph. 928-821-3747 Fax. 866-881-3461
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peering over the edge, reverently taking an irreverent look at everything.
Liz Willoughby on wed 22 mar 06
Hello Steve,
I am a carbon trap shino addict. And that means that for shino
glazed ware, I just accept a certain amount of crazing, and do not
let it worry me. I have plates, mugs, t-bowls, and bowls all made in
porcelain, and dressed with shino. I rationalize it this way. It is
fired to cone 10/11 (propane), the clay is vitreous, and so I think
it is safe. My glaze does craze, but not badly. Sometimes you need
to get out a magnifying glass to see the crazing.
If the crazing bothers you, I would get a glaze calc. program, or do
a line blend, or just lots of tests, until you find something that
works for you. Otherwise, I would just accept it.
I also have shino ware from many other potters, and they all craze,
(except Ron Roy's). Ron gave a lecture at NCECA a couple of years
ago showing how he had made his shino using glaze calc. software.
Good Luck,
Liz from Grafton, Ontario, Canada
>Can it be possible to have a workably functional shino in regards to
>fit .Is the crazing just inevitable with the high sodium or can it be
>balanced and fit well enough to a body to suffice in say a mug or ??? I
>always have loved is simplicity and variety, I'm just not sure of its
>durability.
>
>Thanks again !
lee love on wed 22 mar 06
--- In clayart@yahoogroups.com, Steve Bogue wrote:
>
> Can it be possible to have a workably functional shino in regards to
> fit .Is the crazing just inevitable with the high sodium or can it be
> balanced and fit well enough to a body to suffice in say a mug or ??? I
> always have loved is simplicity and variety, I'm just not sure of its
> durability.
I came to pottery admiring Minnesota Shinos. It is the first
glaze I mixed up, when I was unleashed in the chemical room at UofMn.
I have only used shino on functional ware. Has always
been durable. Crazing can be controlled by application thickness
and according to what you make your shino out of. Mine only crazes
when it is thick. This causes no problems. Only crawls when it is
thick.
In Japan, nobody is afraid of well made stoneware or porcelain
that is crazed or crawled. These are appreciated characteristics of
teaware.
Lee In Mashiko, Japan
http://mashiko.org
http://seisokuro.blogspot.com/
As we express our gratitude, we must never forget that the highest
appreciation is not to utter words, but to live by them.
-John Fitzgerald Kennedy
lee love on thu 23 mar 06
--- In clayart@yahoogroups.com, David Woof wrote:
> The really dangerous things aren't in the studio. What we fear
> usually kills us.
David,
My Googlepages webpage just came through and I put a simple page
up to hold my space. Click on the teabowl to see a larger image of
a shigaraki clay teabowl that has holes from the large feldspar
stones in it, that would give a glaze "anal-retentive" cardiac
infarctions ;^) :
http://togeika.googlepages.com/
I have some photos of shinos I got for Christmans 2005 here:
http://shinoglaze.blogspot.com/
The MacKenzies are a little dark. I need to replace the photos from
my new photo setup.
--
Lee In Mashiko, Japan
http://mashiko.org
http://seisokuro.blogspot.com/
"On the internet, nobody knows you are a dog."
Ron Roy on thu 23 mar 06
Hi Steve,
Some think of a shino glaze only in terms of defects - some would even say
it would not be a shino glaze without the crazing and the pin holes.
If you look at shino glazes from a chemical point of view you will see high
alumina, high alkalies, low silica and alkalie earths.
I think you can do it with the right type of clay body and the right glaze
- limit the amount of soluble sodium for starters - ever seen a salt glazed
pot that was not crazed? Using Spodumene (lithium) to replace some of the
KNaO and you are on the right track.
You may find some clay companies do give out CTE information on there clay
bodies - you want a body with a high coeficient of expansion/contraction.
You will find glaze calculation software very helpful in solving a probem
like this - let me know if you need more information.
RR
>Can it be possible to have a workably functional shino in regards to
>fit .Is the crazing just inevitable with the high sodium or can it be
>balanced and fit well enough to a body to suffice in say a mug or ??? I
>always have loved is simplicity and variety, I'm just not sure of its
>durability.
>
>Thanks again !
.
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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