XPost: sci.electronics.basics, sci.electronics.repair, sci.electronics.design   
   From: tombiasi@optonline.net   
      
   On 1/18/2014 11:22 PM, 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.   
   >   
   Twist the braid into a wire and butt splice on a copper wire. Heat   
   shrink over it.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)