[Jewelry making - Article 00515] - Re: [Orchid] Silver solder laser wire

[Peter W . Rowe]

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>     I see one supplier has silver solder laser wire. Under what
>     circumstances would that be superior to sterling laser wire? Is
>     this strictly a temperature related thing because of silver's
>     higher reflectivity? 

    Especially with lasers that are a few years old, but also the lower
    priced ones or others that don't offer decent pulse shaping control,
    silver can be quite difficult to weld properly. Sterling silver,
    even when your laser can melt it and weld it, tends to sometimes give
    cracked or brittle welds. Silver solder is much easier to melt, not
    just because of the lower melting point, but also lower reflectivity
    and lower thermal conductivity. So using silver solder as the laser
    feed wire can produce a stronger joint with less stress on the
    machine;s power supply and flash lamp too. 

Peter
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