Pam on sat 5 jun 04
They are like fine dark chocolate with a cup of French roast.....mmm..
I am learning so much from you folks!
My teacher's large pots, and a few of mine (smaller stuff) are in the kiln,
waiting for the firing on Monday/Tuesday. I am lucky that my local guild
seems to know what to do for good shinos. We bisque to cone 08, we begin
reduction of the glaze firing at cone 012, fire to 10, all the things I have
seen recomended here in recent days.
I plan to do a couple of test tiles, one from the old bucket of Malcom's
Red, and one from the batch I recently mixed, and set them in the kiln side
by side, just for my own curiosity, to see what the soda ash does :-)
Pam
Lee Love on sun 6 jun 04
Pam wrote:
>I plan to do a couple of test tiles, one from the old bucket of Malcom's
>Red, and one from the batch I recently mixed, and set them in the kiln side
>by side, just for my own curiosity, to see what the soda ash does :-)
>
>
Hey Pam! It is easy to do a third test: "wet mix" a small
lineblend of the two glazes: 50% old and 50% new. A ladle of new and
a ladle of old is the easy way to do it. It would be great to compare
the three. :-)
Also, following what Mel said about claybody and thickness application,
each of these three glazes could be put on a light and dark body and
also applied thick and thin. Before you know it, your have 3 X 4 or 12
different tests from the two glazes you already have mixed up! For
me, with testing for 3 different temps and atmosphere, you multiply by 3
again and end up with 36 test tiles! Gets me in trouble every time.
Jean will ask me: "Are you going to glaze any pots or are you just
going to fill the kiln with tests?" *HaHa!*
Actually, this IS the basis of traditional glaze
testing.
It is funny, while back home I had best results with wirt
shinos on iron bodies, here in Mashiko, they are working better on
light bodies. The dark bodies have been too metallic and do to much
carbon trapping. Not sure, but maybe because they are made of local
mashiko light and red clay mixed, right from the ground, I suspect that
the dark clay has more organics in it. This seemed to be indicated in
my raw glazing tests of shinos on light and dark clays (the dark clay
bloated.)
--
Lee in Mashiko, Japan http://mashiko.org
http://journals.fotki.com/togeika/Mashiko/ Commentary On Pottery
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