A method includes forming a first parison in a glass blank mold, forming a first glass container from the first parison, altering thermal characteristics of the glass blank mold, and subsequently forming a second parison in the glass blank mold and a second glass container from the second parison. Altering the thermal characteristics of the glass blank mold includes forming a heat block channel at the heat block channel locator on an end of the mold or altering coolant flow characteristics of an axial cooling channel by accessing the cooling channel through a coolant deflector of the mold.

A plunger actuation arrangement, parison forming arrangement, a forming machine and methods are provided. Improved fluid flow paths are provided. Cooling arrangements for cooling a linear actuator are provided. Attachment and alignment features are provided for attaching and allowing alignment of a plunger relative to the actuator. Simplified mounting arrangements for mounting the actuation arrangement relative to a machine frame are provided.