SBRANFPOTS@aol.com on thu 20 nov 97
Folks,
The report that this book is out of print and unavailable is premature. We
have plenty of stock ( at a great price!) for anyone that is looking for it!
Steven Branfman
The Potters Shop
Francine Epstein on mon 11 may 98
I have read the book Watercolor on Porcelain and am interested in testing
some water soluble chlorides over, under and without glazes. I have tried
cobalt sulfate (because I already had some) under a celadon glaze at cone
9/10 reduction. It diffused more than cobalt oxide would have but was
still intense. Not streaky though. I will try it at a weaker solution. I
am considering trying to get some of the materials suggested in the book
but am apprehensive because they are toxic and sometimes expensive. Any
feedback or suggestions would be greatly appreciated.
gary holt on tue 12 may 98
Francine Epstein wrote:
>... I am considering trying to get some of the materials suggested in the
book (Watercolor on Porcelain) but I am apprehensive because they are toxic
and sometimes expensive. ....
Francine, you're right. Many of them are _very_ toxic, and very expensive.
I worked for over two years with almost all of the compounds Arne Ase
mentions in his book, plus a few more, and they are not to be treated
incautiously. I live just a few blocks from a chemical supply house here
in Berkeley, so after opening an account it was fairly easy for me to get
anything I wanted, but the owner strongly suggested that I get a copy of
the Merck Index, which is three inches thick and lists nearly every
currently available chemical along with information on toxicity,
solubility, appearance, methods of preparation, uses, etc., etc. It
wouldn't be a bad idea to check out any substance you're considering by
looking it up in the Index... every public library should have one in
their reference section. Also, it's wise to be extremely careful handling
the dissolved salts. Skin is permeable to a certain degree, and the
solutions are almost like liquid metal. In general I tried to be about
three times more careful (at least) than with common ceramic compounds.
Hope this helps........ Gary Holt
Berkeley, CA
| |
|
