Coil Binders — Punching for Plastic Coil

Therefore the margin cannot exceed the bridge (the distance between two holes). The coil spinning in may not spread. The distance between the leading edge of the book and the first hole cannot be longer than the distance between the pitch or any two holes. It is impossible to pull pins and center the sheet prior to punching. It is then necessary to punch a full 44 holes on an 11˝ (279mm) sheet.