The 4th thing you need to know to make jewelry – woohoo – you are almost completely edu-ma-cated-up here. Jumprings are an essential component for connecting things, i.e. adding clasps, dangles, chain extenders, etc. It also applies to opening ear wires and any simple loop. The basic idea is to twist the wire sideways, as pulling it apart will bend the wire completely out of shape and you’ll never get it back, and it will also weaken the wire and make it more likely to break.