John Hesselberth on thu 27 mar 03
Hi Everyone,
I am interested in trying to track down low quality glaze materials
that seem to be in our system. I am ordering small amounts of key
materials from several suppliers, but I am also interested in hearing
from you (off-list, please--I don't think the initial info will have
much interest to the list--I will keep the list informed if I learn
anything important) if you have recently purchased a material that does
not seem to give the same results as your previous batch or is a
different color. So far my interest is directed at cobalt carbonate,
copper carbonate, rutile and whiting, but I may extend it as I get more
information.
What I need to know is where you bought it and what you know about it
from 1) any markings on the bag 2) an analysis of it obtained from your
supplier or 3) from discussions with the supplier. In a few cases I may
want to buy a small sample of it from you for further testing including
putting it in a standard glaze and, possibly, having it analyzed. to
find out what it really is.
If you have any information that you think would help please email me
directly at
john@frogpondpottery.com
Thanks,
John
http://www.frogpondpottery.com
http://www.masteringglazes.com
L. P. Skeen on thu 27 mar 03
John,
Have you seen this new kind of copper carb that is dark green (almost like
chrome) and gritty instead of mint green and fluffy? It's a PITA. :(
L
----- Original Message -----
From: "John Hesselberth"
So far my interest is directed at cobalt carbonate,
> copper carbonate, rutile and whiting, but I may extend it as I get more
> information.
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