Published 10/22/2021 at 728 × 632 in Materials & Modifications to Die Cast the Copper Conductors of the Induction Motor Rotor Fig. 7 – Die cast copper rotor about to be ejected from the center platen portion of the 750 ton machine. Fig. 7 – Die cast copper rotor about to be ejected from the center platen portion of the 750 ton machine.