Ivor and Olive Lewis on sun 5 aug 07
Dear Mel the following messages posted from 03.08.07 are not in the =
archives. I presume lost in space
Best regards, Ivor
Dear Edouard,
Literature research is as much as I can do. Wish I could read technical =
German. There is a wealth of information to be had by folk familiar with =
that language.
One such source might be H. Jebson-Marwedel, " "Glastechnische =
Fabrikationfehler ". Springer. 1969, pp 113-178.
We tend not to realise that many gases such as Oxygen, Nitrogen, =
Chlorine and Hydrogen are diatomic and may be able to remain in solution =
in a melt in what might be termed massive amounts, like several =
percents.
I came to the conclusion more than twenty years ago when studying Salt =
Glaze Processes that the much favoured "Orange Peel" effect was due to =
the evolution of elemental Chlorine from the melt after observing a =
transparent yellow green gas emerging from the flue of my saltglaze test =
kiln at the end of a firing.
Best regards,
Ivor
Paul Lewing on sun 5 aug 07
On Aug 4, 2007, at 10:51 PM, Ivor and Olive Lewis wrote:
Dear Mel the following messages posted from 03.08.07 are not in the
archives. I presume lost in space
Best regards, Ivor
Dear Edouard,
Literature research is as much as I can do. Wish I could read
technical German. There is a wealth of information to be had by folk
familiar with that language.
One such source might be H. Jebson-Marwedel, " "Glastechnische
Fabrikationfehler ". Springer. 1969, pp 113-178.
We tend not to realise that many gases such as Oxygen, Nitrogen,
Chlorine and Hydrogen are diatomic and may be able to remain in
solution in a melt in what might be termed massive amounts, like
several percents.
I came to the conclusion more than twenty years ago when studying
Salt Glaze Processes that the much favoured "Orange Peel" effect was
due to the evolution of elemental Chlorine from the melt after
observing a transparent yellow green gas emerging from the flue of my
saltglaze test kiln at the end of a firing.
Best regards,
Ivor
________________________________________________________________________
______
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Paul Lewing
www.paullewingtile.com
| |
|
