David Beumee on sun 20 apr 03
I have added 3% titanium diox to my copper red glaze
for cone 10 reduction, and the color is amazing but pinholes
are driving me mad. I'm sure the pinholes are from the addition
of titanium, as the copper red glaze by itself has no problems
with pinholing at all. I painted over the pinholes with glaze
and refired the pots and the problem just got worse. Does anyone
have an idea what I might do to cure this problem?
David Beumee
4/19/03 3:55:26 PM, Tony Hansen wrote:
>I\'ve tried the cadmium inclusion stains. They are more expensive
>than other stains and it takes fives time as much to get the color.
>For example, Mason Blackberry Wine works well at 5%, where as
>the cadmium stains take 25%. This is fabulously expensive and
>besides, I did not like the color anyway, it was a boring red flat
>red.
>
>A high CaO glaze like this one
>http://digitalfire.ab.ca/cermat/education/114.php
>using a chrome-tin maroon stain like blackberry wine and
>cooled quickly so it does not crystallize is passable, but
>not red.
>
>The best cone 6 red I have seen is
>http://digitalfire.com/gerstleyborate/recipes/ironreds.shtml
>
>This works better using Boraq than Gerstley Borate. I use
>this glaze all the time, it likes to blister sometimes, but the
>variegation between thin and thick is great and it can be
>a deep vibrant red, but not a blood red.
>
>> The Big Question:
>> Does anyone know of any good preferably high gloss red glaze recipes that
>> can be produced exclusively in the oxidising atmosphere of an electric kiln?
>> Apparently one can simply buy some commercially made glazes, but they are
>> too expensive for limited budgets and I don\'t mind re-inventing wheels
>> anyway.
>> Geoffrey Gaskell
>
>========
>Tony Hansen
>
>______________________________________________________________________________
>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.
>
| |
|
