[Jewelry making - Article 00849] - Re: [Orchid] Hard Soldering - Nickel silver question

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>          The reaction that sterling models have to the sulfur in the
>     natural rubber molds cause all kinds of production defects as more
>     and more molds are made.  The silver solder pits, the silver
>     surface gets rougher and rougher, and the typical production mold
>     cutter doesn't stop to clean them up.  Even if they did, it would
>     actually make matters worse because of the change in configuration
>     of the models over time. Don't you ever change and please could you
>     forward your sources of nickel silver sheet and wire to the rest of
>     the orchid community. You should start a movement. J. Tyler
>     Teague, 


    I must be living in a vacuum, thirty years (5000+, two thousand
    currently in use) of making molds from sterling silver models, and I
    have not had the experience of models degradating from the 
sulfur,
    the model just gets very  oxidized. And spraying the model with a
    silicone mold release can give a smoother surface but I rarely do
    that, as the piece is tumble or hand polished with no perceivable
    loss of detail. I have made multiple molds from one model and the
    worst case is that I have to red rouge polish the piece and it's
    ready to mold again. I have been making models with sterling and it
    is easy to work with, there is no down side for me. Lack of
    technical skill or personal predjudice might be what affects outcome.
    Richard in Mile High City, sawing, soldering, fusing casting, ect. my 
    way to heaven where ever I am geographically



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