I made a earwire jig a couple months ago so now it is a proven jig for jewelry fabrication. It's easy to make, takes less than 30 minutes.

A piece of scrap wood and a 1/4" & a 1/8" wood dowel or nails. Drill your holes insert pegs and you are good to go.
I bend the wires while holding the coil of silver wire in one hand and placing my thumb on one end bend the wire around pegs and snip to size.
I leave a bit extra on the ball end for the silver ball. I flux the end and while holding with tweezers up side down and using a small butane torch carefully melt the wire end till I get the ball size I want.
To work harden them I tumble in stainless steel for 1 to 2 hours.
39don