[Clayart] recent work

Des & Jan Howard djhoward at hwy.com.au
Sat Jul 17 02:55:03 UTC 2021


Carol
In the 'Remarks' section of the link you say,

"Is the color that of cuprous oxide? If so, how did 
copper in the lower oxidation state occur with no 
reduction of any form?"

As I remember the effect of an oil spot glaze is 
brought about by thermal, not atmospheric, reduction at 
about 1230C. Is thermal reduction a possibility with 
this glaze?
Des


On 30/06/2021 12:08 pm, carol at knighten.org wrote:
  > A copper glaze which shows splashes of copper 
yellow in an electric kiln with
> no reducing agent:
> 
> http://carol.knighten.org/2021-GlazeTests/2021-06-29-copperYellowGreen/


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Des & Jan Howard
Lue Pottery
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Australia
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