Unique piercing die incorporating 388 coordinated punches, which accounts for 976 diveting holes in ten separate parts comprising catwalk of "Flying Fortress" is described. (See also Aero Digest v 43 n 6 Dec 1943 p 247-8, 262; Automotive and Aviation Industries v 90 n 2 Jan 15 1944 p 40, 102, 104; Tool Engr v 13 n 2 Feb 1944 p 91-2; Iron Age v 153 n 7 Feb 17 1944 p 69-73; Western Machy and Steel World v 35 n 4 Apr 1944 p 122-6; Steel v 114 n 14 Apr 3 1944 p 126, 129)


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    Title :

    Boeing's new "porcupine" die


    Additional title:

    Machy (Lond)


    Published in:

    Machinery (London) ; 64 , n 1655


    Publication date :

    1944


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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