B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D9/00—Bending tubes using mandrels or the like
B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
B21D9/03—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length and built-up from loose elements, e.g. series of balls
Verfahren, um auf einen Träger den getreuen Schatten einer mit periodisch verteilten Schlitzen versehenen Maske zu übertragen, und Anwendung dieses Verfahrens, insbesondere in der Photolithographie