They will also allow you to do things you can not normally do with a
But neither will completely replace that torch. There are jobs that
they dofaster, and in some cases, better than the torch, but there
are other jobs that the torch remains the best tool for the job.
I will usually lightly tack weld a new setting into a ring, just
enough to hold it without need for any clamping, and then use the
torch to pull solder through completely to secure that setting.