A printing apparatus includes a printing unit, a heater, and a control unit. The band includes a first end and a second end, an interior surface, and an exterior surface. The adjustment mechanism resides in the handle in a manner that does not substantially alter the aerodynamic profile of the racket or affect its usability by providing unwanted external structures. The first and second core elements form a lumen when the first and second folding portions are folded. Processing is laser performed on selected semiconductor material whose internal crystalline structure becomes appropriately changed to establish the desired mechanical properties for a created device. The redundant region combiner also determines whether to combine adjacent regions according to the determined combination order, and combines adjacent regions if the adjacent regions are determined to be substantially the same.