From: Searcher7@mail.con2.com   
      
   On Saturday, 2 December 2017 16:57:17 UTC-5, rickman  wrote:   
   > Searcher7 wrote on 12/2/2017 4:17 PM:   
   > > On Saturday, November 18, 2017 at 5:09:19 PM UTC-5, rickman wrote:   
   > >> Searcher7 wrote on 11/18/2017 3:58 PM:   
   > >>>> Nothing you've posted indicates why the thickness of the traces need to   
   > >>>> vary.   
   > >>>   
   > >>> "One edge will entail a semi permanent connection, but the opposite edge   
   will experience a great deal of connection/disconnection forces."   
   > >>>   
   > >>> I have to leave one edge at it's normal thickness so there will not be a   
   problem with a standard connector.   
   > >>>   
   > >>> The other edge will need to have thicker traces to deal with the   
   frequent connect/disconnects of a custom connector that will be capable of   
   dealing with the thickness of that side.   
   > >>   
   > >> How thick do you expect to make the copper?  Two ounce copper is   
   especially   
   > >> thick and only 2.8 mils.  Do you expect the compliance of a standard   
   > >> connector won't accommodate that?  Or even twice that?   
   > >>   
   > >> I have seen this type of interface wear out before, but it was because the   
   > >> contacts in the edge connector gave up the ghost and lost their   
   resilience.   
   > >> I've never seen the PCB fail other than from oxidation which is usually   
   > >> prevented by a *very* thin layer of gold.  I doubt the copper  thickness   
   of   
   > >> the PCB contact will be the wear factor.   
   > >>   
   > >> --   
   > >>   
   > >> Rick C   
   > >>   
   > >> Viewed the eclipse at Wintercrest Farms,   
   > >> on the centerline of totality since 1998   
   > >   
   > > As for the thickness, initially this will be trail and error. But the   
   standard connector will not work in the end, which is one reason why a custom   
   connector will be used on that end.   
   > >   
   > > Wearing will definitely be a factor due to the frequent conn   
   cts/disconnects.   
   >   
   > I don't follow your reasoning but that's ok.  The point is you can make the   
   > copper thicker across the board and use the same connector.  A few   
   > thousandths of an inch is many times the thickness of 1 oz copper and still   
   > work just fine with the standard connector.  What makes you think the   
   > standard connector won't work "in the end"?   
      
   Because the design will not allow for a standard connector. This is a custom   
   project involving the need for a custom connector.   
      
   So I plan to use electroless nickel plating on the custom connector side of   
   the fingerboard.   
      
   Thanks.   
      
   Darren Harris   
   Staten Island, New York.   
      
   --- SoupGate-Win32 v1.05   
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