From: pcdhSpamMeSenseless@electrooptical.net   
      
   On 5/11/19 10:27 AM, S Deyoreo wrote:   
   > On Saturday, May 11, 2019 at 6:13:50 AM UTC-4, Andy wrote:   
   >> Some of the wire i strip and solder is a dark silver color. Its a pain to   
   solder to copper.. Is it aluminum? I read that a Al forms a non conductive   
   oxide on exposure to air.   
   >   
   > I've had wire that sat for a few years, the ends can oxidize a little ways   
   into the insulation, so when you strip it, you get oxidized wire and it sucks   
   to solder.   
   > Not sure if that's what you have.   
   >   
      
   Yup.  Old, cheap PVC insulated stranded wire is the worst.  I have a   
   couple of thousand feet of it lying around, in assorted colours.   
      
   The solution is to use Kester 44 solder, which has RA flux.  In fact,   
   Kester 44 plus a needle-tipped bottle of RA flux (MG Chemicals 835) is   
   Good Medicine for this problem.   
      
   Cheers   
      
   Phil Hobbs   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)