patti yager on tue 24 aug 04
Hi all,
It seems that the consistancy of copper carbonate has changed in the past
year or so. I used to be able to get a very fine and light, fluffy powder
but no more. All that seems to be available is a heavier, more granular
product. Does anyone know where I can get a larger amount, say a hundred
pounds, of the old stuff? Sure would help me out.
Thanks,
(mud)Patti
now a studio artist
Richard Aerni on wed 25 aug 04
On Tue, 24 Aug 2004 21:05:42 -0500, patti yager wrote:
>Hi all,
>
>It seems that the consistancy of copper carbonate has changed in the past
>year or so. I used to be able to get a very fine and light, fluffy powder
>but no more. All that seems to be available is a heavier, more granular
>product. Does anyone know where I can get a larger amount, say a hundred
>pounds, of the old stuff? Sure would help me out.
>
Hi Patti,
I really don't know about the changed consistancy of the copper carb. It
seems to change all the time, both in color and grain size. It's rare for
one to match the other when I put the new order in the container with the
remnants of the old. Also, without seeing yours, it would be hard to tell
you where to get the "old stuff". Best advice would be to call around to
the various suppliers who advertise in CM and have them send you a test
packet, say 100 grams or so, and see if one comes close to the other.
The important question, though, is "how does the new stuff work in your
glazes?"
Best,
Richard Aerni
Rochester, NY
L. P. Skeen on wed 25 aug 04
That new copper carb is some nasty stuff. I hate it. Glad to know that one
can still get the good stuff! :)
L
----- Original Message -----
From: "dan Bowen" Subject: The new copper carb
> I have been purchacing the lite fluffy version from U S Pigment
http://www.uspigment.com
Cynthia Bracker on wed 25 aug 04
Ask your supplier if they have changed sources. If so, ask who the old
source was and start calling up other suppliers and ask where their
copper carb comes from. Good Luck!
Cindy Bracker
patti yager wrote:
>Hi all,
>
>It seems that the consistancy of copper carbonate has changed in the past
>year or so. I used to be able to get a very fine and light, fluffy powder
>but no more. All that seems to be available is a heavier, more granular
>product. Does anyone know where I can get a larger amount, say a hundred
>pounds, of the old stuff? Sure would help me out.
>
>Thanks,
>
>(mud)Patti
>now a studio artist
>
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dan Bowen on wed 25 aug 04
I have been purchacing the lite fluffy version from U S Pigment
http://www.uspigment.com/
U.S. Pigment Corp. ( no affiliation, just happy customer) I had some of the
dark heavy version that was quite bottom heavy.
Dan Bowen
Weirwood Station Pottery
On the Eastern Shore of Virginia
william schran on thu 26 aug 04
Patti wrote:> All that seems to be available is a heavier, more granular
product. Does anyone know where I can get a larger amount, say a hundred
pounds, of the old stuff?<
I got a batch of the lighter in weight & color form US Pigments not long ago.
Bill
Ivor and Olive Lewis on thu 26 aug 04
I am wondering if this is Copper Carbonate derived from the natural
mineral Malachite or if it is synthetic, being in fact the double
substance Copper Carbonate Hydroxide.
This material is mentioned in Ceramic Technology for Potters and
Sculptors, Y Huchinson Cuff. ISBN 0-8122-1377-7.
Might pay to ask the supplier.
Best regards,
Ivor Lewis.
Redhill,
S. Australia.
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