In a method for communicating between a number of first services and a number of second services. An active end of the lever, located on an L-shaped bend at an end of the lever, can be introduced internally of the opening to interact contactingly with the internal surface of a part of the support ring pre-inserted in the opening. The method extracts one or more of these stranded messages from the location internal to the first program, determines the original destination of each stranded message and delivers that message to the second program. If fashioned from individual nest elements, the orientation of the apertures may be adjusted as desired, such that each element may be stacked upon an adjacent element in one of four orientations, so that the cavities of one element may be at 0\xb0, 90\xb0, 180\xb0 or 270\xb0 relative to an adjacent element. If the average voltage of the power signal being supplied to the welding-type device is less than the minimum acceptable average voltage, the welding-type device is prevented from being operated.