Jack wrote:
One of the legs develop a pinhole leak at the junction between the coupling
and the 1" pipe about one drop every minute 24 hours after sweating. Another
24 hours later the leak had stopped. What's going on? Should I re-sweat that
joint?


Leak sealed up with hard water deposits...............one of the
blessings of hard water

Should I re-sweat that joint?,

How difficult a location to redo the work?
How damaging of the leak got really bad?

I hate to admit it but in my own houses I have (only a very few times)
just left something like this alone & considered myself lucky.

Haven't had it bite me (yet)

I would never leave something like this in work for someone else, the
risk is too high.

But for my own work, the repair guy is right there.....................

cheers
Bob