Abstract: An apparatus can include a base mold and a silicone bag attached to the base mold. The base mold and the silicone bag can define a primary chamber in fluid communication with a primary vacuum port and a resin channel in fluid communication with the primary chamber. Resin can be injected into the resin channel and, with the assistance of a vacuum pressure applied at the primary vacuum port, resin flows from the resin channel into the primary chamber where it infuses a porous material. The base mold and silicone bag also define an outer vacuum channel that holds the silicone bag in place. The apparatus can be used in a method of manufacturing composite materials.