Joyce Lee on sun 19 apr 98
I have now waited three days for the ugly gray foam to settle in my test
batch (2500 gram) of shino. It's still there when I remix it. I have
glazed three pots hoping that the foam would "dry off" or whiff away. It
did dry but the foam-created pitty look is still on the pots. My
question: is this normal with some shinos? Will it all settle out in the
^10 reduction firing? Do you think spodumene is the culprit? I'm sure
the spod is from the bag I used when I tested this same shino in a 100g
batch and brushed it on a flat tile; there was no foam and the tile
looks terrific...touches of apricot to reddish rust. Thanks for any
suggestions or information.
Joyce
In the Mojave where the poppies are saucer size and stunning...
Liz Willoughby on mon 20 apr 98
>----------------------------Original message----------------------------
>I have now waited three days for the ugly gray foam to settle in my test
>batch (2500 gram) of shino. It's still there when I remix it. I have
>glazed three pots hoping that the foam would "dry off" or whiff away. It
>did dry but the foam-created pitty look is still on the pots. My
>question: is this normal with some shinos? Will it all settle out in the
>^10 reduction firing? Do you think spodumene is the culprit? I'm sure
>the spod is from the bag I used when I tested this same shino in a 100g
>batch and brushed it on a flat tile; there was no foam and the tile
>looks terrific...touches of apricot to reddish rust. Thanks for any
>suggestions or information.
>
>Joyce
>In the Mojave where the poppies are saucer size and stunning...
Hello Joyce,
Shinos do tend to get this foam, after stirring. Just take your stick and
move the foam over to the edge of the bucket, and then dip. The good thing
about a shino glaze is that the particles will remain suspended for a
longer period of time and you don't have to stir before each dip. Some of
those bubbles might show up on your pots. The foam on the surface of my
shino glaze does usually settle out. When stirring do it gently, with a
wide wooden spoon or stirrer, instead of a whisk. Hope your results are as
good as with your first test. Best of luck, Liz
Liz Willoughby
R.R. 1
Grafton, Ontario
Canada. K0K 2G0
e-mail lizwill@phc.igs.net
Jon Pettyjohn on mon 20 apr 98
Hi Joyce,
just came across an interesting website of a Japanese potter
named Shiho Kanzaki in Shigaraki. In addition to some very
interesting info and pics of Anagama fired pots he has a
bulletin board. In this bulletin board there is a message from
a potter named Des Howard about Shino glazes.
I have long wondered how to achieve the highly textured crawled
surface of the Shino glaze, Des Howard advises us to use a drill
mixer to "foam up" the glaze just before glazing and with the
addition of "PVC" glue to the glaze he says the traditional
Shino type texture is obtained.
I am wondering though where Japanese potters got their Black
and Decker drills some centuries ago. The point is taken though
that the foam night be a good thing when it comes to Shino,
nothing worse than a smooth flat "Shino" glaze. This glaze is
famous for it's crawled, beaded, highly textured white surface.
Have to admit I'm a bit baffled here, I've been testing Shino
recipes for quite a few years without achieving the beautiful
"melting ice" surface of the best Shinos.
Anybody know what "PVC" glue is ??
Please check out Kanzaki's message board at:
http://cgi.biwa.or.jp/~shiho/ebbs/index.cgi
Jon Pettyjohn
Manila
jon@mozcom.com
> ----------------------------Original message-- --------------------------
> I have now waited three days for the ugly gray foam to settle in my test
> batch (2500 gram) of shino. It's still there when I remix it. I have
> glazed three pots hoping that the foam would "dry off" or whiff away. It
> did dry but the foam-created pitty look is still on the pots. My
> question: is this normal with some shinos? Will it all settle out in the
> ^10 reduction firing? Do you think spodumene is the culprit? I'm sure
> the spod is from the bag I used when I tested this same shino in a 100g
> batch and brushed it on a flat tile; there was no foam and the tile
> looks terrific...touches of apricot to reddish rust. Thanks for any
> suggestions or information.
>
> Joyce
> In the Mojave where the poppies are saucer size and stunning...
>
D & J Howard on mon 20 apr 98
Joyce
Have a look at my posting on
Des
in the Central Tablelands, where we are trucking in water, & Jan's trees are
just surviving (most, not all, part of the El Nino butchers bill)
Des & Jan Howard
Lue Pottery
LUE NSW 2850
Australia
Stephen Mills on mon 20 apr 98
Joyce,
With a foaming glaze that won't disperse I scrape the surface to one
side with a ruler or a piece of card each time I dip a pot. Alternately
scrape and scoop it off.
Steve
Bath
UK
In message , Joyce Lee writes
>----------------------------Original message----------------------------
>I have now waited three days for the ugly gray foam to settle in my test
>batch (2500 gram) of shino. It's still there when I remix it. I have
>glazed three pots hoping that the foam would "dry off" or whiff away. It
>did dry but the foam-created pitty look is still on the pots. My
>question: is this normal with some shinos? Will it all settle out in the
>^10 reduction firing? Do you think spodumene is the culprit? I'm sure
>the spod is from the bag I used when I tested this same shino in a 100g
>batch and brushed it on a flat tile; there was no foam and the tile
>looks terrific...touches of apricot to reddish rust. Thanks for any
>suggestions or information.
>
>Joyce
>In the Mojave where the poppies are saucer size and stunning...
>
--
Steve Mills
Bath
UK
home e-mail: stevemills@mudslinger.demon.co.uk
work e-mail: stevemills@bathpotters.demon.co.uk
own website: http://www.mudslinger.demon.co.uk
BPS website: http://www.bathpotters.demon.co.uk
Joyce Lee on tue 21 apr 98
Wow! Thanks for all the many responses, both direct and on Clayart,
concerning the gray shino foam. Now I'm really excited! I WAS going to
unload the unfired kiln in a few minutes, take out the shino pots,
either wash them off and start over, or pat down and rub the
bubbly-looking stuff. No way! I think I just didn't understand shino;
actually, I still don't but am several steps further along, thanks to
Clayarters. If this GORGEOUS gray foam eventually leads to anything
like the pots of Sheila Clennell, I will be soooo impressed with myself!
Joyce
In the Mojave where she just pulled out one of her earliest pots of
brown clay, glazed with a local glaze made with mud from the Sierras,
layered with classroom shino and dipped in tenmoku around the rim. At
the time I thought it was so bad (not as in good) and couldn't
understand my instructors' appreciation. What is carbon trapping, I
asked? Looks like ashes, I said. Exactly, they said. Yuck, says I. Hang
onto it, says they, you'll appreciate it later. They were right. The
day has come. Hallelujah for education!
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