A technique for forming a sub-0. The heater for the flex-hood half comprises both a primary combustion heat source and an indirect heat source capable of extracting by-product heat from another operation. Refrigeration is provided by either a conventional reversed-Brayton cycle, one or more Peltier devices or a chilled, re-circulating liquid that does not change phase as it circulates but which is chilled by another refrigeration system, such as a conventional refrigeration system. The first and second attachment member are frictionally rotatable with respect to each other along a first axis and a second axis. After the sealing, the support portion is cut from the lead frame and separated from the second end section.