bill edwards on tue 28 feb 06
Some years ago I had a friend we called 'Stormy'. She
and I was very close. She had asked me if I could make
her a purple glaze that had life to it because it was
her favorite color. Stormy passed away a few years ago
from pancreatic cancer and her daughter told me the
other night she wanted a piece of her mom's glaze on
something before I sold out and was done with it all.
She got teary eye'd, my heart went out to her and I
told her that I had a little of that glaze left and
would do just that. I also told her that even though I
had this in the book I have on record, that I would go
ahead and make it a public record as a way to honor
Carroll 'Stormy' Thompson. She also was one of my
older students when I was the arts director at the
Armory arts center. It seems I have lost too many
great friends out there and I love these people so
much, its so hard to have to let go of all these
beautiful people. So I honor her by doing this.
Edwards Stormy Lavender Blue ^6 Ox.
NC-4 Soda Spar - 47
Silica - 14
Talc - 12
Ferro 3134 - 13
Dolomite - 9
EPK - 5
1.50% cobalt carbonate
5.00 Manganese Dioxide
5.00% Rutile
COE 9.6118
AL:Si 9.7928
ST 318.257
The above glaze needs to hit ^6 and may be held on the
way down for extra crytals or fired as is. You might
try it both ways for the adventure of purples and
lavenders. They are evasive at times.
Also the numbers will be different even for me as I
have up-dated the above materials since the analysis
and that usually will make some differences, all
software for calculations are different so don't
believe you are going to get the same readings like so
and so unless you and so and so are imputting
indentical seger or molecular information at the same
time using the same set of rules.
manganese dioxide - This is not a toxic item until
firing based on records and evidence I have at this
point. Smoke from this is toxic. Long term exposure to
these may give symptoms that resemble parkinsons known
as manganese poisoning. It is not fully undestood in
my own opinion if continued inhalation of dust
particles may also give rise to the problem if there
is enough small particulate available over a period of
time to induce symptoms. TLV based on weight and LD-50
on rats hasn't been done as far as I know on the smoke
but I don't have any mice in my studio just a few big
bugs on occasion and they are all alive and well. I
use an enviro-vent perhaps that helps.
I consider this a decorative glaze that should work
fine on the outside of your pots and a good liner
glaze for food bearing and areas where acidics may sit
should be used. Color can be pulled from strong
acidics suggesting the above warnings. Like I said, it
was a special glaze that took some time and physical
testing to get right and while some would argue it
could be made better, the last 100 or so tests have
changed it remarkedly into something other than what I
wanted. The guru's can tackle it once it is in book
form and see if they can conquer it their way but
right now after many tests I am apt to say, stick
close to the recipe or you'll be disappointed in your
results. And please, talk to me about this glaze and
let me discuss the pro's and con's with you. There's
plenty of things to go around for others to discuss
before they get tangled up in this and throw everyone
off kilter and start a new glaze before this one has
the chance to be fired as written. So you have alot in
the above to digest. The warnings are there. The facts
are accurate. The name is there and the implied
message on how I want it processed and used it there.
Now I want to that honored but if one of the guru's
promises to make the glaze their way and post pictures
with their molecular results, they have permission.
But the honor is for the deceased not for myself or to
sell the book or promotion of it whatsoever.
Bill Edwards
http://apottersmark.blogspot.com/
'Studio Pottery Set-up for Sell, offers considered!'
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