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Using house hold hydrogen peroxide and white vinegar for phot etching

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While doing some research on photo etching I ran across this item.  It is about making printed circuit boards but the etching part is what is most interesting.  The etchant is a mixture of plain white vinegar and 3% hydrogen peroxide with a little table salt.  Much less toxic/dangerous than the typical hydrochloric acid or ferric chloride etchant.  I have not tried this yet but it looks like a good method.



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