On Thu, 6 Mar 2008 10:50:26 -0500, "DKat"
wrote:

I am reposting this from clayart. I know our room is small but I'm hoping
this might get more notice here since it has gotten none in clayart.


I have some 510 (miller) which I got from another potter who did not like
the way it felt (seems fine for me in that regard). They said that it was
a clay suitable for cone 6 stoneware, pit and raku however the only
information I can find on it has the clay as cone 10 or at most a range
from cone 8 to cone 10. Has anyone worked with this clay in the cone 6
range? I'm thinking I will probably have to just store whatever I make
with it until I can rent a kiln for high fire but I thought I would just
ask. Donna


Never hear of it. But you could easily make up a few test bars and
throw them in with your next set of bisque and glaze firings to cone
6. You will have to decide for yourself if they are vitrified enough.
You could compare them to identical bars made from your regular
cone 6 body, just for a reference point. Do absorption tests,
which everyone uses as a benchmark. If they don't absorb
excessively (say, under a few percent), you are probably OK.
You can then use the clay normally to make a few mugs, and try
microwave tests to see if that's going to be a problem.

But people use low-fire for all kinds of stuff, including mugs,
so it's really a judgement call. If your clay still has high
absorption at cone 6, and you are nervous about functional
uses, just save it for non-functional. Actually, it might even
make good ovenware, if you want to do the testing.

Best regards,



Bob Masta

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