[Jewelry making - Article 00776] - Re: [Orchid] What's a sparkie?

[RMS]

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    Ahhh yes, Sparkie has not been heard from much of late. If you are
    going to SNAG this year we will be demonstrating again. You'll here
    the snap of the welder in the suppliers room. There are two Sparkie
    welders. The original Sparkie was found to be under powered and
    limited to ear posts and tie tacks. The Sparkie II has gone through a
    couple of model changes but remained pretty much the same for some
    years now. The newest model is the "Millennium". It is simply a
    capacitive discharge welder. The welder contains two large
    capacitors. A capacitor is like a battery except that it releases
    all of its stored energy in a single burst. The fusion finding it
    loaded into a collet which is one side of the circuit. Each fusion
    finding has a small nib forged into it base. It looks like a
    miniature nipple. The jewelry piece is held up against a jig which is
    the other side of the circuit. The spring loaded collet is released
    and the finding strikes the piece. At the instant that the nib hits
    the piece the stored energy is released through it. It explodes.
    driving the atmosphere away and allowing the metals to melt together
    in a momentary vacuum. It all takes about as long as took to type
    that last period. There is little clean up and the finding is not
    annealed. There is a short learning curve to the machine. It is
    especially good for small production runs and repairs. And of course,
    the Titanium ear post and clutch can be welded to most other metals.
    If you want more information please contact us off line. Bill 

    See: www.reactivemetals.com/Pages/rmsspa.htm 

Bill, Deborah & Michele
Reactive Metals Studio, Inc
928-634-3434, 800-876-3434, 928-634-6734fx
http://www.reactivemetals.com
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