Llewellyn Kouba on sun 1 apr 01
I have about 5# of copper that came in from another studio and it is a
dusky brownish green color and not the clean light green that I am
accustomed to. I am sure it is properly labled and that it isn't rutile
or chromium green. Perhaps this is just the difference in some mines? I
haven't tried it yet but is shades and shades darker than the what I am
accustomed to seeing in its ground dry state.
Ababi on sun 1 apr 01
I had in my studio, which was of another potter, long time ago, a gray
material. no one could identify it, but it was copper. I used it as it was ,
without mixing it with copper oxide or carbonate.
----- Original Message -----
From: "Llewellyn Kouba"
Sent: Sunday, April 01, 2001 6:44 PM
Subject: Old Copper
> I have about 5# of copper that came in from another studio and it is a
> dusky brownish green color and not the clean light green that I am
> accustomed to. I am sure it is properly labled and that it isn't rutile
> or chromium green. Perhaps this is just the difference in some mines? I
> haven't tried it yet but is shades and shades darker than the what I am
> accustomed to seeing in its ground dry state.
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Cindy Gatto on sun 1 apr 01
Back when I was in school a teacher gave me about
ten pounds of copper. After leaving school I also left clay. It took me 12
years to get back to clay. When I came back I still had my copper along with
other oxides. Naturally I used it and got quite a normal range of results. As
I started to run out of the copper naturally I had to order more. What I
received was a light green in color, No where near the dusky dark brownish
greenish of my ten pounds from twelve years previous. My reaction was the
same as yours but in reverse. I thought the new light green copper that I
received from my supplier was no good and I was afraid to use it for the same
reasons you are afraid to use the old copper. My answer to you is don't worry
I had no problems all my glazes came out the same with both the old and new
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