[Jewelry making - Article 00035] - Re: [Orchid] Casting copper recommendations?

[Terry Ogden]

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Noel

>     Does this mean that 90/10 cu/ag will make a good copper solder? 

    In my experiment it did not. 

    I used 26 grains Copper and 2.6 grains Silver, rolled it out to a
    small sheet and cut palions. For soldering it was different. I could
    not get the mix to melt into the joint unless lain on a reflective
    surface when using propane/air. In the third hand, it just would not
    do it with a propane/air torch. Tried butt joining a copper and brass
    strip, used the Oxy/Acet and the brass melted before the
    copper/silver mix. When you do get a joint, it is very strong, even
    stronger than the copper brazing rod, the joint is not as bright
    silver as the rod, but it is lighter than pure copper when it comes
    out of the tumbler. 

    One thing I noticed is that the silver started coming out of the
    copper like it will on Sterling. 

    Positive things are that it pours well, gets really hard, retains
    the copper color, and polishes well. It is a very successful medium
    as described by the poster, but as a solder for copper, I am still
    looking. 

Terry


 
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