iandol on wed 1 mar 00
-------------------
I am seeking opinions about a design concept.
A bowl has been designed which is to be made from Unglazed Terra Cotta with
Black Slip decoration across the inside of the bowl. The bowl is to remain
unglazed.
Your comments would be appreciated.
Ivor. Inquisitive as usual
Paul Taylor on thu 2 mar 00
Dear Ivor
cryptic as usual.
I for one, as long as the pot was labeled clearly, would not object to
any body selling this pot for domestic use.
I eat out of wooden bowls and use wooden salad servers happily, which
probably hold as many germs.
Alas this is the twenty first century and germ phobics rule our lives and
litigation is an international sport . Sooner or later someone will find
enough circumstantial evidence to blame the listeria in the berger on the
bowl. By the time some lawyer gets hold of the maker he/she may get to keep
his dog but nowt else.
Of course I am presuming this bowl to be free of heavy metal release and
politically sound.
Regards Paul T
God knows how the ancient Greeks and Romans survived.
----------
>From: iandol
>To: CLAYART@LSV.UKY.EDU
>Subject: Unglazed Domestic Pottery
>Date: Wed, Mar 1, 2000, 5:43 pm
>
>----------------------------Original message----------------------------
>-------------------
>I am seeking opinions about a design concept.
>A bowl has been designed which is to be made from Unglazed Terra Cotta with
>Black Slip decoration across the inside of the bowl. The bowl is to remain
>unglazed.
>Your comments would be appreciated.
>Ivor. Inquisitive as usual
Anji Henderson on thu 2 mar 00
Is this not a functional bowl?? Are you burinishing
it??
I would say that if you compress well and do not leave
as much of a porus surface, and it is decorational..
No problem.. But if it is to be functional, ya' better
glaze it.. Terra Cot is very porous, althought the red
is nowhere near as bad as the white, but it will pick
up the dirt and food if is functional.. Ahhh, and will
pick up oil's & dirt from ones hand over time, and oil
spots if say someone deciced to put nuts in it even
with the shell's on..
Anji
--- iandol wrote:
> ----------------------------Original
> message----------------------------
> -------------------
> I am seeking opinions about a design concept.
> A bowl has been designed which is to be made from
> Unglazed Terra Cotta with
> Black Slip decoration across the inside of the bowl.
> The bowl is to remain
> unglazed.
> Your comments would be appreciated.
> Ivor. Inquisitive as usual
>
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Lee Love on fri 3 mar 00
In Japan, unglazed surfaces on functional ware is pretty common. Hi fire
work does not need glaze because it is not porous. That is one definition
of high fire work, that it isn't porous. On the otherhand, many lowfired
glazes will eventually allow moisture under the glaze through tiny cracks in
the glaze surface.
A firing technique popular here in Mashiko' It
is reduction during cooldown. One potter friend says he reduces beginning
at 870*C until 826*C .) He use to put a log in a special port at the
bottom of the door of his gas kiln for this, but figured out how to do it
with gas (the trick is to keep loosing temperature while introducing a
reducing atmosphere.) This type of reduction makes for a dark iron
bearing body without black coring or bloating. It is popular to use wax
resist, making bare areas on the clay body after glazing and layering the
same glaze to get different patterns.
There are other ways that bodies are left bare in functional work.
I was looking at some tea ceremony bowls today at work and they are have
scars on the inside, where setters were place to nest another teabowl.
Many of the old platters had a bare ring, free of glaze on the inside, where
the foot of the other platter to be glaze fired would sit. They also use
seashells on the insides of ware to nest things.
--
Lee in Mashiko, Japan Ikiru@kami.com
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