----- Original Message -----
From: <k3hx@juno.com>
> I've been through the archives on this but have not found
>
> suitable answers.
>
>
> In addition to some Cadweld "one-shots," circumstances require
>
> me to clamp / braze some less critical connections.
>
>
> I've some skill welding and brazing and an oxy-fuel setup.
>
>
> 1 Is there a specific flux that is required or just works
>
> better for this procedure? If so, a maker and part
>
> number would be appreciated.
>
>
> 2 Is there a specific type of brazing rod that is required
>
> or just works better for this. I asked my welding jobber
>
> for "silver bearing" brazing rod and got a blank stare in
>
> response. If so, a maker and part number would be
>
> appreciated.
>
>
> 3 I'll be using stranded #2. Any special precautions, advice
>
> or "tricks of the trade" would be welcomed.
>
>
> Thanks to all.
>
> 73
>
> Tim Colbert K3HX
>
Tim,
When I inquired about silver soldering copper-to-copper at the
local welding shop, the guy there sold me a tube of "Stay-Silv
15" Silver Brazing Alloy Rods (15% silver, 5% phosphor). Mind
you I haven't tried them yet (I am planning to use them for my
front-yard radial project), but according to the catalog they are
supposed to be self-fluxing for joining copper to copper (the
catalog recommends Stay-Silv white brazing fluz for joining
copper-to-brass or brass-to-brass). Solidus temp is 1190 deg
F and liquidus 1480 deg F:
http://www.jwharris.com/jwprod/pcubrazealloys/#staysilv15
Again, please bear in mind that I haven't actually tried these
yet, so I can't swear that they are the right solution, but the
technical/catalog does seem promising.
73, Mike W4EF...............................................
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