ELIZABETH JACOBS on fri 28 may 99
I am mixing a raku glaze that calls for black copper oxide. I don't have
any and have not been able to find any info about how and if it can be
substituted. If any one has any ideas, I would appreciate it.
Thanks,
Elizabeth
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Edouard Bastarache on sun 30 may 99
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Hello Elizabeth,
James Chappell in The Potter's Complete Book of Clay and Glazes suggests 1
part black copper oxide for 2 parts copper carbonate.
Later,
Edouard Bastarache
edouardb=40sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/=7Eedouardb/
-----Message d'origine-----
De : ELIZABETH JACOBS =3Ctheclaystudio=40home.com=3E
=C0 : CLAYART=40LSV.UKY.EDU =3CCLAYART=40LSV.UKY.EDU=3E
Date : 28 mai, 1999 14:19
Objet : Need substitute for black copper oxide
=3E----------------------------Original message----------------------------
=3EI am mixing a raku glaze that calls for black copper oxide. I don't have
=3Eany and have not been able to find any info about how and if it can be
=3Esubstituted. If any one has any ideas, I would appreciate it.
=3E Thanks,
=3E Elizabeth
=3E=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A==
2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2=
A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A
=3E
=3EE-MAIL: theclaystudio=40home.com
=3E
=3EVISIT MY WEB SITE AT
=3E
=3Ehttp://www.members.home.net/finearts/eliz.htm
=3E
=3E=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A==
2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2=
A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A=2A
Stephen Mills on sun 30 may 99
Try Copper Carbonate and increase the quantity by about 25 percent, it's
weaker but I find it more controllable.
Steve
Bath
UK
In message , ELIZABETH JACOBS writes
>----------------------------Original message----------------------------
>I am mixing a raku glaze that calls for black copper oxide. I don't have
>any and have not been able to find any info about how and if it can be
>substituted. If any one has any ideas, I would appreciate it.
> Thanks,
> Elizabeth
>************************************************************
>
>E-MAIL: theclaystudio@home.com
>
>VISIT MY WEB SITE AT
>
>http://www.members.home.net/finearts/eliz.htm
>
>*************************************************************
>
--
Steve Mills
Bath
UK
home e-mail: stevemills@mudslinger.demon.co.uk
work e-mail: stevemills@bathpotters.demon.co.uk
own website: http://www.mudslinger.demon.co.uk
BPS website: http://www.bathpotters.demon.co.uk
Mike Bailey on sun 30 may 99
In message , ELIZABETH JACOBS writes
>----------------------------Original message---------------------------
-
>I am mixing a raku glaze that calls for black copper oxide. I don't
have
>any and have not been able to find any info about how and if it can be
>substituted. If any one has any ideas, I would appreciate it.
> Thanks,
> Dear Elizabeth
You can, of course, use copper carbonate. To compensate for the CO2 you
multiply the amount of black copper oxide by approx 1.5
Alternatively you put the copper carb in a bowl and turn it into black
copper by firing it to red heat.
Hope this helps
Mike Bailey
>************************************************************
>
>E-MAIL: theclaystudio@home.com
>
>VISIT MY WEB SITE AT
>
>http://www.members.home.net/finearts/eliz.htm
>
>*************************************************************
>
--
Mike Bailey
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