Abstract: A device and method for continuously forming superconducting wire, and products made therefrom. The method may include providing at least one continuous metal sheathing strip and at least one metal form, continuously forming the at least one continuous metal sheathing strip to form a partially open configuration, continuously filling the partially open configuration with magnesium diboride precursor comprising boron, and a metal form, and closing the partially open configuration thereby enclosing the magnesium diboride precursor comprising boron, and a metal form, to form a closed configuration. Subsequent reduction in diameter and elongation in length of the closed configuration, followed by heat treatment, catalyzes the transformation of the magnesium diboride precursor comprising boron, and the metal form, to magnesium diboride to form the superconducting wire.