Cathi Newlin on wed 1 sep 10
Tried my hand at a couple of Shinos, with unexciting results.
Where can I learn more about how to get these glazes to sing?
I did have some nice pieces, and think I finally have a handle at least
on the mechanics of glazing.
I'll take any feedback anyone has on working with Shinos, and on how I
might be able to take my kiln down in temp slowly (I like Tea Dust
doncha know), and appreciate anyone who wants to have a look at my
results...
http://squarepegarts.blogspot.com/2010/09/latest-firing-results_01.html
Thanks!
--
Cathi Newlin, Angels Camp, Ca
cathi@box49.com
box49@caltel.com
cathi@SquarePegArts.com
-------------------------------
The Square Peg
http://www.squarepegarts.com
California Boxers in Need:
http://CaliforniaBoxer.org
David Finkelnburg on thu 2 sep 10
Cathi,
There is an issue of Studio Potter devoted to Carbon Trapping which you
might look for. Some discussions in the archives, also.
That said, the subject is really one of trial and mistake. :-)
Anything that introduces variation into the surface may produce more
interesting results. Malcolm Davis works diligently to apply his glazes in
varying thicknesses. He also promotes irregular drying to cause heavier
accumulations of soda ash in one area than in another. Decoration with wax
causes heavier soda ash "scumming" along the edges of the wax. Decoration
with overglazes can be a hedge against failure to trap carbon.
Regarding tea dust, I have good luck crash cooling to 2,000F, then
manually controlling the burners to cool to ~1,700F over 2 to 3 hours, then
letting the kiln cool at its rate. As always, YMMV!
I love your graph of your kiln firing. Nice work.
Good carbon trapping!
Dave Finkelnburg
http://www.mattanddavesclays.com
-----------------------------
Date: Wed, 1 Sep 2010 16:28:35 -0700
From: Cathi Newlin
Subject: Latest Firing - Shino attempt, Silly Mistake and Warping
Tried my hand at a couple of Shinos, with unexciting results.
Where can I learn more about how to get these glazes to sing?
I did have some nice pieces, and think I finally have a handle at least
on the mechanics of glazing.
I'll take any feedback anyone has on working with Shinos, and on how I
might be able to take my kiln down in temp slowly (I like Tea Dust
doncha know), and appreciate anyone who wants to have a look at my
results...
http://squarepegarts.blogspot.com/2010/09/latest-firing-results_01.html
Thanks!
--
Cathi Newlin, Angels Camp, Ca
cathi@box49.com
box49@caltel.com
cathi@SquarePegArts.com
William & Susan Schran User on thu 2 sep 10
On 9/1/10 7:28 PM, "Cathi Newlin" wrote:
> Tried my hand at a couple of Shinos, with unexciting results.
> Where can I learn more about how to get these glazes to sing?
>
> I did have some nice pieces, and think I finally have a handle at least
> on the mechanics of glazing.
> I'll take any feedback anyone has on working with Shinos, and on how I
> might be able to take my kiln down in temp slowly (I like Tea Dust
> doncha know), and appreciate anyone who wants to have a look at my
> results...
Given all of the sodium in the shino glaze, the glaze will sinter and begin
to melt earlier than other glazes, so you may need to start your reduction
down about ^012 - ^010.
You may also want to try spraying iron ox. on the before applying glaze and
on others, spraying iron over the glaze. This will be helpful if you clay
contains little iron.
Bill
--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Elizabeth Willoughby on sat 4 sep 10
Hi Cathi,
I am doing a copy and paste from a post I put up on clayart a few years ago=
.
Hope this helps.
Carbon trap shino is a beautiful glaze, if it works! It is difficult, but
worth it in my opinion to keep trying.
I use mostly porcelain and usually do not add the red art to my m.d.
glaze. I do alter the glaze by replacing half the EPK with alumina.
Here is what I do. Bisque at cone 04. Glaze by dipping. One dip and
my pieces tend to be more orange, two dips and they tend to be more
white, but also have more carbon trapping. I will double dip the rim
of a bowl, for instance, for more carbon trapping. If I have a vase
I will glaze the inside first, glaze the outside, and then when it
sets up, do a light spraying of glaze over the outside. Sometimes I
get beautiful spots doing this.
The snotty green is too much soda ash. If you want to use just use
soda ash, just brush it on a stoneware, for a wood-fired look.
Important things that I have learned. Glaze your shino pieces the
day before or the day of stacking, for better carbon trapping.
Candle for 1/2 day, have burners on low overnight, turn them up at 6
in the morning. (Like Mel, I like to have my firing over late
afternoon). My brain tells me that by candleing a long time and
having the burners on low overnight, using the moisture in the kiln
from the recently glazed pots, to help create carbon, which in turn
helps to create carbon trapping when I go into reduction at cone 012.
It is fun to fool around with the wax resist. use it, then dip again.
Press your thumb on a glaze after you have glazed, interesting
effect. lots of things you can do. But especially find out where
your sweet spots are in the kiln. Try the top for the vases. I find
that it is a good spot for carbon trapping, also the front by the
door.
Put lots of glaze tests in, next to cone packs. After doing all
this, you still will be frustrated, if you want 100 % perfect carbon
trapping in your kiln. I can have two pots sitting side by side,
glazed the same time, the same way, and come out completely
different. I really have just learned to accept what I get, but to
keep trying.
Do you have Studio Potter, Vol. 21
#1? Good article in there on shinos by Jim Robinson.
Also a more recent Studio Potter, Vol 30 #2, has articles in it by
various potters, some with recipes, curated by Malcolm Davis.
Liz Willoughby
Brighton/Grafton, Ontario, Canada
On Wed, Sep 1, 2010 at 7:28 PM, Cathi Newlin wrote:
> Tried my hand at a couple of Shinos, with unexciting results.
> Where can I learn more about how to get these glazes to sing?
>
> I did have some nice pieces, and think I finally have a handle at least
> on the mechanics of glazing.
> I'll take any feedback anyone has on working with Shinos, and on how I
> might be able to take my kiln down in temp slowly (I like Tea Dust
> doncha know), and appreciate anyone who wants to have a look at my
> results...
> http://squarepegarts.blogspot.com/2010/09/latest-firing-results_01.html
>
> Thanks!
>
> --
> Cathi Newlin, Angels Camp, Ca
> cathi@box49.com
> box49@caltel.com
> cathi@SquarePegArts.com
>
>
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