Anodic depletion was [Silver Etching]

John what voltage do you use for the anodic depletion of silver with
phosphoric acid as the electrolyte ? –

James Binnion Metal Arts
Phone (510) 533-5108
Toll Free (877) 408 7287
Fax (510) 533-5439

@James_Binnion
Member of the Better Business Bureau