XPost: sci.electronics.basics, sci.electronics.repair, sci.electronics.design   
   From: bespoke@invalid.tv   
      
   I am trying to solder some RG-6 shield to a pcb. The braid won't tin. It's   
   almost like it's dissipating the heat faster than I can apply it. With both a   
   temp-controlled iron (set as high as 700F) and a mondo 100W stick I finally   
   tried. The solder will barely melt when touched to the braid opposite the   
   iron.   
      
   I've applied some Kester rosin paste flux as well using my trusty Kester   
   60/40 lead-based rosin core solder. No joy. I'm not holding the braid against   
   the PCB now, I'm just trying to tin the braid and then deal with melting the   
   2 solders (on the PCB and the braid) together later.   
      
   My first attempt--before I realized that I was overheating it--I melted the   
   dielectric insulation.   
      
   The mesh is made from some silver-colored braid which I thought is tinned   
   copper but now I'm of the opinion that it's steel; it's certainly not   
   aluminum. There is also foil which is probably aluminum but I've trimmed that   
   back and it's not part of this frustrating process right now.   
      
   What's the trick to getting this braid to take solder? I've never seen this   
   before.   
      
   Thanks.   
      
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