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   comp.sys.ibm.ps2.hardware      Discussing IBM PS/2 hardware      42,985 messages   

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   Message 42,032 of 42,985   
   RickE to gfre...@aol.com   
   Re: Cleaning gold contacts   
   08 Aug 23 16:45:59   
   
   From: ekblaw@vnet.ibm.com   
      
   On Monday, July 31, 2023 at 11:23:57 PM UTC-4, gfre...@aol.com wrote:   
      
   > Yeah after 25 years,, they took the "gold can" away from us. The old    
   > guys said it was safer than carbon tetrachloride that they used before    
   > ;)    
      
   I used "carbon tet" for many things back in the 1960s, it was a great   
   cleaner.  But as a demonstration of how dangerous it could be in closed   
   spaces, I used to kill butterflies for my collection using an old peanut   
   butter jar (yes, they used to be made    
   out of glass with metal lids).  Put a few drops on a tissue, put the tissue in   
   the jar then add a thin cardboard circle to cover the tissue, put in the   
   butterfly and screw down the lid.  Within 10 seconds the butterfly would be   
   dead, and it died so    
   quickly that it didn't have a chance to injure itself.  The "typical"   
   butterfly killing chemical, nail polish remover, took much longer to work, the   
   butterflies would beat themselves inside the jar and far too often you wound   
   up with a specimen that wasn'   
   t worthy of mounting to the butterfly board.  Triclor was indeed safer (and   
   less effective as a cleaner), though it certainly needed to be used with   
   care.  Isopropyl alcohol is even safer, way less effective as a cleaner, but   
   has not yet fallen    
   completely afoul with the safety police.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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