A method of manufacturing and supplying a net-moulded article of expandable syntactic material and a related shipping package are provided. A groove can be formed in the insulating layer and a conductive material can be formed in the groove to a level that is recessed in the groove. In response to detecting the change, the system determines a state of the system. An adhesive strip with backing is wrapped around the Y, perpendicular to its axis, and adheres in its middle to the Y.