No. 1 I assume that you should have a few basic tools around the
shop; Vise, hand drills or electric drill, wood, etc.
As Markus, I use wood as a feeding system for the wire to make
the springs for the jump rings. I differ from his technique in
that I use soft woods (pine, fur,etc.) to make blocks out of
(4x4x1). You need two blocks with a bench vise. Place the wire
between the two and crush it to make a feed path and then loosen
to required drag. The blocks should be off set to create a nest
for the rod to travel accost while forming a spring (one block
is a half inch higher).
Rods are easy to find such as coat hanger that you can
straighten out or brazing rod, drill rod stock.
Drill a hole the end of the rod and put into a drill and form
Now that you have spring that can be three foot long you must cut
Take the same size rod and cut a channel in the end and about two
inches from the slot bend the rod at 45 degrees and the one above
bend again 45 degrees to form a gentle S shape. This help to
compress the spring when cutting against the bench pin.
If you going to do a lot a steel bench pin helps. Use a 4x2x.125"
sheet and screw one end to the bench and in the other cut a D
shape hole 1.5 mm from the edge. Compress the spring on to this
and cut with a saw frame.