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  1. I am new to the discussion, so forgive me if this topic has been debated in the past, and I overlooked it in the archive. Is copper carbonate suitable for use on functional wares? I use a Turner's White base, fired to cone 8, usually in electric. I have a beautiful light green I achieve, using 1% copper carbonate in my recipe. I have researched far and wide, with many responses about the use of copper carb on food surfaces. Does the copper pose a problem only when used in conjunction with certain materials or is it toxic no matter the circumstance? Also, does reduction influence the toxicity of copper carbonate? All thoughts are appreciated.
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