A method of manufacturing a semiconductor device includes first and second processes, the latter requiring more processing time. The first strip of material is shaped to include first and second generally oval-shaped portions which are connected through a neck. All vanes may be used together to adjust exhaust surface area to maximize thrust and fuel efficiency in varying conditions. The radius variation is determined by the rasp blade cutting diameter and the angle that the blade 200 is to nest on the end plate of the hub assembly in which the blade is used. Between said first and further locations, an end-of-block code is recorded so that the recorder will ignore the HDTV data.