A hyperdispersant for use in a fluorocarbon coating composition is disclosed. Each of the handles provides a generally circular side wall having a plurality of arcuate side wall segments adapted for compressive constraint within the roll core and outward spring bias deflection for gripping the roll core interiorly at one end. In one embodiment, the jig includes grooves which do not completely surround the perimeter of the cannulas guided by the jig. The thermal model includes a plurality of nodes and at least one thermal resistance.