Hi Anita,
   
  No need to worry about the silver sulfied on the bar, as it is highly 
conductive and will not interfer with the process.
   
  "Ole Bob"

 
    Hi everyone. I am about to make my first foray into making CS. I bought 2 
silver bars from a coin shop and one has some tarnish on it. The other is ok. I 
was wondering what does everyone use to clean their silver before using them in 
a generator? I would like to stick with something natural/organic. I tried 
soaking them in vinegar. So far didn't help. Any help is greatly appreciated. 
Thanks.Anita 
    
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