Rapesco PF25A001 Single Hole Punch Model 25, 10 Sheet Capacity, Silver

Product Information

For the US letter paper size ( 8 + 1⁄ 2 by 11 inches, 220 by 280mm), a three-hole standard is widely used.

The distance to the paper edge also varies, with 1⁄ 2 inch (13mm) hole-center-to-edge being typical. The travel distance of the cylinder is generally very short -- the thickness of the paper sheets -- so the cylinder can be positioned close to the lever fulcrum. The diameter of the holes varies between manufacturers, with typical values being 1⁄ 4 to 5⁄ 16 inch (6 to 8mm). Some ticket punches have a longer reach/depth (allowing for a particular spot on the ticket to be punched), or punch a particular shape instead of a round hole.The 5⁄ 16 value is most commonly used, as it allows for looser tolerances in both ring binder and paper punching. One guide will be along the side of the paper to be punched, and sets the distance of the holes from the edge of the paper (the margin or gutter). Commonly, one or more punch heads are mounted in independent fittings, which can slide along a rail.

A hole punch does not necessarily make round or square holes in a sheet of paper; instead, it may create certain shapes along the edge of the sheet. Single-hole punches are often used to punch holes through old playing cards at casinos, marking them as "used" or "canceled". The other guide will be on a perpendicular side, and aligns the holes between the top and bottom of the sheet. This is seen in discbound notebook systems, where loose leaves are bound together using plastic discs.Hole punches are available in standard two-hole models that are designed for ring binders and lever arch files, single hole punches to give you maximum flexibility, and 4 punch holes for unusual gauges of binder. As punched tape technology became obsolescent in the 1980s, the manual tape repair tools became rare. Made of metal, you can easily perforate up to 5 sheets of 80 gsm paper and this hole punch hasa confetti reservoir. Some 2-hole punches have an "888" marking on their paper guide, to assist punching all four holes into A4 paper. This extension is sometimes referred to as the "888" system, because of the three 8-cm gaps between the holes.