an apparatus and method for sequentially molding a plurality of plastic articles within a single mold unit . a first mold section is provided with a runner system and a plurality of gates and a second mold section is provided with a plurality of recesses in operable alignment with the gates of the first mold section . when the second mold section is clamped into mating engagement with the first mold section , a plurality of discrete mold cavities are formed , each having at least one corresponding gate provided on the first mold section . a central processing unit signals an injection assembly as to the proper injection parameters for each discrete mold cavity . the central processing unit opens the gates sequentially , with each discrete mold cavity being filled according to its own set of injection parameters . by the present method , it is possible to mold a plurality of articles having different injection parameters , while using a single mold unit . the present method also makes it possible to mold the small articles without having to overfill the mold cavity , which could result in defective products or damage to the mold unit . because the present method can be used to mold a plurality of small sets of small articles , more precision can be obtained than with the prior art method of filling one large set of small articles .