In reply to Andy Moles: if you mean the old friends and you fail to get any then a repair with knotted plastic strimmer cord or fishing line can be made that never seems to need replacing and works fine (my oldest such repair is probably well over a decade old now). Burn the knots to seal them in place.
In reply to Andy Moles: plastic strimmer cord is fine and never needs replacing again. Any rigid wire will eventually snap again IMO and cable will fray.