iandol on sun 20 apr 03
Dear Ellie Blair,
Regarding the distinction in use between Copper Oxide and Copper =
Carbonate.
Because the Carbonates have to undergo decomposition to create glaze =
soluble oxides the process has the effect of refining the grain size, =
giving much smaller particles than can be obtained by grinding.
I think the assumption is that copper oxide derived from Cu-carbonate =
will dissolve more rapidly and disperse more thoroughly in the melt =
giving a better colour response.
Best regards,
Ivor Lewis
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