Abstract: An injection molding apparatus and method are provided, comprising: a core plate having a male protrusion; a cavity plate having a female cavity configured to be mated with the male protrusion; a first insert plate; a second insert plate connected to the first insert plate by a rotating arm; a motor; connected to the rotating arm, operable to rotate the first insert plate and the second insert plate in and out of the female cavity of the cavity plate; and an induction heating device, positioned outside of the cavity plate, operable to cause an induction current on a surface of either the first insert plate or the second insert plate when either are rotated outside of the female cavity.

Abstract: A lattice structure according to an embodiment of the invention comprises a plurality of struts integrally connected to one another at a plurality of nodes, wherein the plurality of struts are arranged into at least a first region comprising a first repeating strut arrangement, a second region comprising a second repeating strut arrangement, the first repeating strut arrangement being different to the second repeating strut arrangement, and a boundary region disposed between the first region and the second region, the boundary region comprising a plurality of struts configured to connect nodes in the first region to nodes in the second region, a strut arrangement in the boundary region being different to the first and second repeating strut arrangements. The first repeating strut arrangement and/or the second repeating strut arrangement may be configured based on a crystallographic lattice, including but not limited to the Bravais lattices.