[Jewelry making - Article 00105] - Re: [Orchid] Soldering copper

[ronald francis]

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    I recently used a tig torch to weld copper, with both sil-phos
    brazing rod, and with ordinary copper wire. Now there's a colour
    match.  A tig torch is also called Heli-Arc by some, it's an electric
    arc process where the arc is surrounded by inert argon gas.  

    About the relationship of soldering, brazing, and welding: Soldering
    can be considered like glueing, but at low heat like 400-600.  
    Brazing is like the same, but high enough heat to get the material
    red hot. It's sometimes called hard-soldering because the solder, the
    brazing rod, is hard like brass, not soft like lead-tin solder. 
    Welding is entirely different; it's like melting two ice cubes then
    refreezing them as one cube.  They become one.  Of course this can
    all be described differently on a molecular level.  I am a
    professional welder certified in several diffent procedures.  

Ron

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