[Jewelry making - Article 00145] - Re: [Orchid] Problem soldering

[James Binnion]

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    #3 tips are too small try #5 or #6 tips. 

    Use lots of clean paste flux, clean metal, and clean solder. Heat
    the whole piece with a more attention to the area you wish to solder
    but heat the whole piece. Once you get near soldering temperature
    then focus more on the area to be soldered. Copper is extremely
    thermally conductive and if you only focus on the area you wish to
    solder you will take much longer to bring the work up to soldering
    temperature and burn out the flux and oxidize the work area. You
    should not need to use propane and oxygen solder this size work. You
    are more likely to oxidize the work and burn out the flux with the
    propane/oxygen and again too much spot heating. If you are going to
    use the propane / oxygen rosebud torch use a soft bushy slightly
    reducing flame and again heat the whole piece not just the area you
    are trying to solder. 

    Using A-B adaptors will not affect the amount of heat you get
    substantially. What they are trying to tell you is the whole torch
    system from regulator to torch tip needs to be higher capacity.
    Larger hoses larger, fittings, torch body that can handle higher flow
    rates, regulators with higher flow rates etc. But again you do not
    need this just get a couple of larger air/acetylene tips and
    practice, practice, practice. 

Jim

James Binnion
jbin AT mokume-gane.com
James Binnion Metal Arts
http://www.mokume-gane.com
360-756-6550
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