Also be advised that soldering or brazing in this context does not imply
with a "soldering iron". The work must be clean and heated with a torch to
the liquidus temperature of the silver braze (silver solder) chosen. Two
basic types are the 4 - 6 % silver type, sometimes referred to as "silver
bearing" solder, and the higher silver content type, usu. ranging upwards to
45% silver. The latter type is more expensive but quite a bit stronger and
requires a higher temperature, usu. in the range of 1100 to 1300 deg. F. Do
a "Google" check on the subject. IMO, the lower temperature, silver-bearing
solder, is sufficient for most jobs. I would not be afraid to join square
tubing with it, unless there was a terrific amount of lateral strain
involved.

Bob Swinney

"Bob May" wrote in message
...
For a strength of joints, welding comes first, followed by a good braze
and
then silver soldering. Getting the braze or solder into a substantial
joint
may make the joint almost as strong as a weld joint but any voids will
decrease the strength. The brazed joint is of a stronger metal than a
silver solder joint so the tear strength will be higher with the brazed
joint.

--
Why isn't there an Ozone Hole at the NORTH Pole?