Baron Molds And Casts adds molds that must be used to cast intermediate components. Additionally, recipes that use intermediate components output the used molds, which can be reused. This will result in many more belts and inserters, and dealing with cycling molds.
Baron Molds And Casts is intended to add flavor to a faction of the Baron Factions Mod, but can be used in a stand-alone game as well. This considerably increases the complexity of the game.