RE: Four Star 60 Firewall
Vogan
You did a good job getting that plane on the ground with minimum damage-good job!
Solder is kind of funny sometimes. It'll look pretty good even if the joint is cold soldered. The solder should be pretty shiny if the joint is good. If it looks a little dull you need to maybe redo it. The parts should be clean and you should use flux. Don't put the flame on the solder-heat the metal then apply the solder. I used acid core solder on mine and they seem to be holding up so far, even if the rest of the plane isn't.
Cecil