Annie Evans on fri 31 oct 03
I just had the first firing of several people's work after convincing them
to buy 500 pounds of paperclay from Mile Hi. The shipping costs were
greater than the clay itself.
There were vicious cracks, explosions and a strange cracker-like texture in
some pieces.
Do any of you know what could have caused this?
LindaBlossom on sat 1 nov 03
> I just had the first firing of several people's work after convincing them
> to buy 500 pounds of paperclay from Mile Hi. The shipping costs were
> greater than the clay itself.
>
> There were vicious cracks, explosions and a strange cracker-like texture
in
> some pieces.
>
> Do any of you know what could have caused this?
Annie,
It is not due to the paper. Something else is wrong in either the clay body
or the making and drying end of things. I would do some controlled tests -
making and drying and firing. I would tell Mile Hi of the problems, tell
them what I was doing and ask them at the same time to check the batch and
if you need to send them a bit of it. Companies do make mistakes making
clays - I had a weird ton from Laguna once that looked like it had 30% red
iron oxide in it when it should have had 30% red art. Just people loading
mixers and they do make mistakes.
Linda
Ithaca, NY
Ababi on sat 1 nov 03
Yes
Too fast firing
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910
http://www.matrix2000.co.nz/Matrix%20Demo/Ababi.htm
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Annie Evans
Sent: Saturday, November 01, 2003 3:02 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Bad Paperclay?
I just had the first firing of several people's work after convincing
them
to buy 500 pounds of paperclay from Mile Hi. The shipping costs were
greater than the clay itself.
There were vicious cracks, explosions and a strange cracker-like texture
in
some pieces.
Do any of you know what could have caused this?
.
Snail Scott on sat 1 nov 03
At 07:02 PM 10/31/03 -0600, you wrote:
>I just had the first firing of several people's work after convincing them
>to buy 500 pounds of paperclay from Mile Hi...
>There were vicious cracks, explosions and a strange cracker-like texture in
>some pieces...Do any of you know what could have caused this?
Paperclay retains moisture much longer than
other clays. If the work was dried only as
long as usual, it may well have had enough
moisture remaining to crack and explode. It
doesn't explode quite like regular clay because
of the tensile strength provided by the paper,
but what you describe sounds rather like a damp-
paperclay incident. It really can take a very
long time (both sitting out, and then candling)
to adequately dry paperclay.
-Snail
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