[Jewelry making - Article 00243] - Re: [Orchid] Hard soldering sterling silver

[coralnut]

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Allen

    Remember, Batterns is a wetting/cleaning flux. It is not meant to
    cover the entire piece in a protective manner. The flux James is
    talking about, boric acid in alcohol or Prip's are intended as
    protective fluxes and are meant to spread over broad areas to protect
    against fire scale. 

    If you look in the Orchid Archives, you will find some indepth
    discussions about the properties of each.  James Binion has done a
    lot of research on the heat properties of borax vs boric acid and
    shared that with our forum. >From what he has provided and from my
    own research, each  medium provides specific protection in different
    heat ranges.  That is why I teach my students to use Prip's flux and
    why I myself changed quite some time ago from boric acid to Prip's.
    But its up to each individual to use what gives them the best
    result. 

    Batterns or pure borax fluxes are intended, as I mentioned in a post
    a day or two ago, are used  to specifically wet/clean only the area
    of the join. Thus, it is supposed to just lay there and not spread. 
    First you use Prip's (or boric acid if you wish) on the whole piece
    to protect it, then you apply Batterns or borax just to the join to
    clean and wet it so the solder will flow and fill. 

    Hope that clarifies.  Cheers from Don at The Charles Belle studio in
    SOFL where simple elegance IS fine jewelry! dcdietz AT comcast.net

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