Ababi on wed 14 jan 04
Hal's problem is that he sticks to what he has learnt many years ago.
I know at least one potter that acts like him, perhaps two...
To remind you people did not know that cigarettes are bad to health.
Now we know.
The problem Hal is that new comers are seeing a recipe. You describe it
as a recipe of a well known potter; they want to try it too.
People like me that are hungry to knowledge that are learning through
testing, why killing them? 10 cobalt 6 chrome 3 vanadium 2 uranium!
Why not just 50CC of gasoline? It will be faster with less expense!
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://ababi.active.co.il
http://www.matrix2000.co.nz/Matrix%20Demo/Ababi.htm
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Tony Hansen
Sent: Wednesday, January 14, 2004 6:24 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Uranium: You cannot be serious
Good God man, this is not true. I have been watching this
discussion in amazement. People are talking to you and
you are not listening.
John Hesselberth reminded you last week that just because
something is melted does not mean it is not soluble.
If you put uranium into an unstable glaze it will leach
out for absolute certainty. This is dangerous thinking
you are promoting on this discussion group.
It is possible to make a crystal clear glaze that can be
completely disolved in weak acid.
There is no right temperature for lead, there is no
such thing, it is all about the chemical balance of
the glaze. Stoneware and porcelain are not by nature
safe. Dangerous glazes at high temperature are just
as common as for low temperature.
I have tried to fix your many capitalization and
spelling mistakes:
-------8<--------
Hal McWhinnie said:
The problem with uranium and also lead is not the chemistry when fired
on
safe bodies such as stoneware or porcelain but in the handling of the
dry
materials in the studio.
The problem is that we have blamed the material for our human
carelessness.
Lead is a perfect example. it is quite safe for glazes on procelain if
fired to
the right temp.
-------
Tony Hansen, http://digitalfire.com
Personal Contact Page: http://digitalfire.com/services/contact.php
Calculation/Database Software for Ceramic Industry
.
Tony Hansen on wed 14 jan 04
Good God man, this is not true. I have been watching this
discussion in amazement. People are talking to you and
you are not listening.
John Hesselberth reminded you last week that just because
something is melted does not mean it is not soluble.
If you put uranium into an unstable glaze it will leach
out for absolute certainty. This is dangerous thinking
you are promoting on this discussion group.
It is possible to make a crystal clear glaze that can be
completely disolved in weak acid.
There is no right temperature for lead, there is no
such thing, it is all about the chemical balance of
the glaze. Stoneware and porcelain are not by nature
safe. Dangerous glazes at high temperature are just
as common as for low temperature.
I have tried to fix your many capitalization and
spelling mistakes:
-------8<--------
Hal McWhinnie said:
The problem with uranium and also lead is not the chemistry when fired on
safe bodies such as stoneware or porcelain but in the handling of the dry
materials in the studio.
The problem is that we have blamed the material for our human carelessness.
Lead is a perfect example. it is quite safe for glazes on procelain if fired to
the right temp.
-------
Tony Hansen, http://digitalfire.com
Personal Contact Page: http://digitalfire.com/services/contact.php
Calculation/Database Software for Ceramic Industry
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