[Jewelry making - Article 00028] - Re: [Orchid] IT Solder

[Peter W . Rowe]

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>        On jump rings, when you close the join, mark the spot with a
>     permanent black ink pen.  After pickling, you can easily find the
>     spot for soldering. 

    Remembering that pickling only removes surface oxides, and has no
    other cleaning action, why would you pickle your jump rings after
    closing them, before soldering?  Normally, one would expect the jump
    rings to be already clean before you close them, and closing them
    isn't going to change that.  They should be ready for soldering as
    soon as you close them.  You'd put some flux on the jump ring,
    protect the rest of the piece from fire scale if needed (prips flux,
    for example), and solder the ring.  THEN you pickle it.  Also, be a
    little careful of the black pen.  it will act as a solder resist, at
    least that portion that doesnt' burn off.  if you get the ink INTO
    the joint, the solder won't flow well there, as the residual carbon
    from the ink will block solder flow (and the initial ink application
    may reduce flux coverage too.)  If you mark the joint, it would be
    best to place the mark slightly to the side of the actual joint. 

Peter


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