RE: Etching chrome.  As an unspecific recollection, I believe that a 
     KOH + Potassium Permanganate solution will strip Chrome from Copper.  
     I am not certain of concentrations and temperatures.  Note that this 
     will create environmental concerns on the spent etch solution and 
     rinses.
     
     Marshall Gurian
     Coates ASI


______________________________ Reply Separator _________________________________
Subject: FAB: to etch chrome but not copper
Author:  [log in to unmask] at internet
Date:    8/1/96 11:52 AM


Can anyone tell me what etchant will dissolve chrome but not copper?
     
I'm thinking about using cold dilute sulfuric acid but I'm not sure what is 
used commercially anymore.
     
Thanks!
     
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