Structural Breaks Should Always Be Silver Soldered.
Call me picky, but I resoldered this D palm key touch piece because it had been soft soldered. Silver solder is far stronger than soft solder because the alloys are heated to above 800 degrees, and at this liquidus temperature, the molten filler metal interacts with a thin layer of the base metal, cooling to form an exceptionally strong, sealed joint due to grain structure interaction. The silver brazed joint becomes a sandwich of different layers, each metallurgically linked to each other.
And it looks way better when it is done cleanly.
This is part of a Full Mechanical Overhaul on a '73 Mark VI. I could have left this key the way it was. It did function after all. But that is why I say, "call me picky."
Call me picky, but I resoldered this D palm key touch piece because it had been soft soldered. Silver solder is far stronger than soft solder because the alloys are heated to above 800 degrees, and at this liquidus temperature, the molten filler metal interacts with a thin layer of the base metal, cooling to form an exceptionally strong, sealed joint due to grain structure interaction. The silver brazed joint becomes a sandwich of different layers, each metallurgically linked to each other.
And it looks way better when it is done cleanly.
This is part of a Full Mechanical Overhaul on a '73 Mark VI. I could have left this key the way it was. It did function after all. But that is why I say, "call me picky."
