From: nidan.danny@gmail.com   
      
   On Sunday, January 19, 2014 3:22:18 PM UTC+11, Bob E. wrote:   
   > 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.   
      
   get some phosphoric acid and brush it on when the surfaces are as hot as you   
   can get them... the solder will flow and wet like a dream. you would not   
   believe it! (BTW it's the same acid that's in coca cola). hope this helps,   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)