One of the fiber glass rods in my Stein throw cube somehow got broken and I repaired it today by taking a piece.of.music wire, doubling it and super gluing rods together. Seems like it will work like a charm.
Music wire that I get in 3 foot lengths from a hobby shop is incredibly stiff which is why I use it. It won't get inadvertently bent up. I use it for my wire fids as well. You need to have a bending jig to bend it.