Originally Posted by
mizgeorge
Graeme, as a mailler, you know that an unsoldered jump ring needn't be a weak point - provided the AR is small enough and the wire is the right temper.
It's also always worth bearing in mind that a jump ring can provide a nice safe break point in a piece - especially one using chain. Far better to repair a single ring than replace a whole length of snapped chain :)
Have you tried protecting the magnetic element whilst soldering, or we talking very small clasps here?