Abstract: A rotor assembly for a reluctance machine consisting of end holders with recesses for securing magnetic layers. The spaces between magnetic layers forming fillable nonmagnetic layers. These nonmagnetic layers being optionally not filled, filled with nonstructural material, filled with structural material, or a combination of these. If the nonmagnetic layers are filled with permanent magnets or a structural permanent magnet, consisting of honeycomb with embedded permanent magnets, the rotor then forms a hybrid permanent magnet machine. Spider holders and fiber wrapping optionally added to reinforce the rotor. This rotor assembly is also reversible so that the end holders' recesses secure the nonmagnetic layers instead of the magnetic layers. An assembly method for any configuration of the rotor assembly is set forth that employs simple manufacturing processes.