- If the jumpring (jr) is attached to a piece of jewelry, I grasp
it with a pair of crosslock tweezers with the opening of the jr as
far as possible from the tips of the tweezers. This depends on the
jr being large enough to have some distance from those tips.
Titanium c. l. tweezers are good to use here because solder will not
fuse to the tips. If you don’t have titanium tweezers, you can paint
the tips of your tweezers with a little yellow ochre to prevent
solder from flowing and fusing onto the tips.
I rest the tweezer/jr combo on a soldering brick, so that the tips
of the tweezer extend out beyond the edge of the brick. Any kind of
brick will work. You need a little height so that the tips are over
air, not over the brick, and the opening of the jr is out there,
too. Now you know where the opening is and it won’t shift.
I use a tiny brush to apply some paste flux (liquid will work, too)
to the opening of the jr.
I ball up a very tiny paillon of Easy solder nearby where the
tweezer/jr combo is. You can use Hard or Medium solder, depending on
where the jr is and what else has to soldered.
I light my torch, which is a Smith torch, with a moderately small,
not the smallest tip.
I use a titanium solder pick, dip it in a very little flux, heat it
and touch it to the solder ball. The ball will stick to the heated
I gently heat the jr, bringing the pick/solder combo near it. I
touch the solder ball to the heated jr, where I know the opening is,
when the jr has been heated sufficiently. The solder ball should
flow directly into the opening.
Hope this helps,