Double Punching Machine F 42 D Automatic punch to realize the binding perforation for wire binding or filing holes and corner rounding or day tear-off perforation in one working process.For manufacturing medium to high production runs of writing pads, ring binder inserts, desk-top calendars etc., having rounded corners or Day Perforation (corner tear-off perforation).Compact and heavy duty construction to punch paper, cardboard and mixed material. Easy and comfortable to operate by one person, because of the clear arrangement of the working sections.A wide range of punching tools is available for binding perforations, filing hole systems, corner rounding and day tear off perforation. Technical DataFirst Station          Punching of the binding perforation or filing holes  Second Station     Corner rounding or corner tear-off perforation (Day-perforation)Paper Size     &nb