[TowerTalk] Re cadwelding

[charlie at thegallos.com]

> I have for some time wondered about using what's known as sil-fos, or
> commonly known as _silver brazing rod_. It varies from 15% to just 5%
> silver, the remaining being copper. Has anyone tried this as a
> substitute for cadwelding? I have been a refrigeration mechanic, and we
> use that rod to connect copper to copper or brass joints (with flux)
> rather than sweat-soldering. They are high pressure joints and it seems
> as though it would work well for ground rod brazing as well. Any
> comments, folks?

Great minds think alike - I just posted a similar question.  I have about
4 tubes of silphos sitting here (Dad was an HVAC mechanic for 40+ years),
as will as other Hard silver solder (as in what you use to make up
boilers)

The last time I checked code on grounding systems, I KNOW the later was
allowed (not sure on the former), but I wonder if 1)Still code 2)how well
it holds in real life

(What, with 5 B tanks, 2 MCs, and about 10 O2 bottles sitting in the
garage, Brazing is easy)