An injection molding apparatus comprising: a stationary half comprising: a sprue opening extending through a thickness of the stationary half forming a sprue passage; a stationary half mold surface; and an ejection block cavity disposed adjacent to the sprue opening; a moving half disposed opposite the stationary half and comprising a moving half mold surface, wherein the stationary half mold surface and the moving half mold surface face one another; a presser in mechanical communication with, and configured to move, the stationary half, the moving half, or both together to form a molding cavity between the stationary half mold surface and the moving half mold surface; and wherein an ejection block comprises a mold contact surface forming a portion of the stationary half mold surface, wherein at least a portion of the ejection block is disposed within an ejection block cavity, and wherein the ejection block is configured to movably fit within the ejection block cavity; and an injector for introducing a material to be molded through the sprue passage and into the molding cavity; characterized in that the material can be pushed from the molding cavity by the ejection block following a molding operation without separating material formed in the sprue passage from material formed within the molding cavity; wherein the ejector pin or the ejector pin cavity, or the ejector pin and the ejector pin cavity comprise an undercut or cooperate to form an undercut configured to hold the material adjacent to the moving half when the stationary half and the moving half are separated; and wherein the ejector pin is configured to push the material away from the moving half. a stationary half comprising: a sprue opening extending through a thickness of the stationary half forming a sprue passage; a stationary half mold surface; and an ejection block cavity disposed adjacent to the sprue opening; a sprue opening extending through a thickness of the stationary half forming a sprue passage; a stationary half mold surface; and an ejection block cavity disposed adjacent to the sprue opening; a moving half disposed opposite the stationary half and comprising a moving half mold surface, wherein the stationary half mold surface and the moving half mold surface face one another; a presser in mechanical communication with, and configured to move, the stationary half, the moving half, or both together to form a molding cavity between the stationary half mold surface and the moving half mold surface; and wherein an ejection block comprises a mold contact surface forming a portion of the stationary half mold surface, wherein at least a portion of the ejection block is disposed within an ejection block cavity, and wherein the ejection block is configured to movably fit within the ejection block cavity; and an injector for introducing a material to be molded through the sprue passage and into the molding cavity; characterized in that the material can be pushed from the molding cavity by the ejection block following a molding operation without separating material formed in the sprue passage from material formed within the molding cavity; wherein the ejector pin or the ejector pin cavity, or the ejector pin and the ejector pin cavity comprise an undercut or cooperate to form an undercut configured to hold the material adjacent to the moving half when the stationary half and the moving half are separated; and wherein the ejector pin is configured to push the material away from the moving half.