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A hole punch (known also as a holing pincer, hole puncher, hole maker, or rarely perforator, or paper puncher) is a common office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder. A leather punch, slightly different from one designed for paper, is used for leather goods.
The origins of the hole punch date back to Germany via Matthias Theel, where two early patents for a device designed to "punch holes in paper" have since been discovered. Friedrich Soennecken made his patent on November 14, 1886, for his Papierlocher für Sammelmappen.
A typical hole punch, whether a single or multiple hole punch, has a long lever which is used to push a bladed cylinder straight through a number of sheets of paper. As the vertical travel distance of the cylinder is only a few millimeters, it can be positioned within a centimeter of the lever fulcrum. For low volume hole punches, the resulting lever need not be more than 8 cm for sufficient force.
Two paper guides are needed to line up the paper: one opposite where the paper is inserted, to set the margin distance, and one on an adjacent side.
Hole punches for industrial volumes (hundreds of sheets) feature very long lever arms, but function identically.
Another mechanism uses hollowed drills which are lowered by a screwing action into the paper. The paper is cut and forced up into the shaft of the drill to be later discarded as tightly packed columns. This method allows a small machine to cut industrial volumes of paper with little effort.
The most common standard for the dimensions and location of filing holes punched in paper is International Standard ISO 838. Two holes with a diameter of 6±0.5 mm are punched into the paper. The centers of these holes are 80±0.5 mm apart and have a distance of 12±1 mm to the nearest edge of the paper. The holes are located symmetrically in relation to the axis of the sheet or document.
Any paper format that is at least 100 mm high (e.g., ISO A7 and larger) can be filed using this system. A printed document with a margin of 20–25 mm will accommodate ISO 838 filing holes.
4-hole extension ("888")
A four-hole extension is also commonly used. The two middle holes are punched in accordance with ISO 838, and so paper punched with the four holes can be filed in binders that are consistent with ISO 838. The two additional holes are located 80 mm above and below these. The use of two additional holes provides more stability. This extension is sometimes referred to as the "888" system, because of the three 8-cm gaps between the holes. Some 2-hole punches have an "888" marking on their paper guide, to assist punching all four holes into A4 paper.
For US Legal Size paper format (8-1/2" x 14" or 216x355 mm) traditionally 4 holes has been used in the past and still in use today but not as common as it sibling the standard 3 holes (see below). The 4 holes are preferred due to the extra long length of 14" side of the paper where the 4 holes would be placed. Binders with 4-rings gives the paper a better support in the binder. Were the documents only punched with 3 holes it will with time create sacking of the paper at the top part of the binder above the top ring. The 4 holes are positioned symmetrically 3.5" (89 mm) apart (center to center of each hole)
In regions that use the U.S. "Letter" paper format (8.5" x 11" or 216×279 mm; United States, Canada, and in part Mexico and the Philippines), a three-hole standard is widely used. The holes are positioned symmetrically, with the centres 108 mm (4-1/4 in) apart. The diameter of the holes varies between manufacturers, with typical values being 6–8 mm (1/4 to 5/16 inch). (The 5/16 value is most commonly used, as it allows for more variation in both ring binder and paper punching.) The distance of the hole center to the paper edge also varies, with 12 mm (1/2 inch) being a typical value. Unlike ISO 838, this 3-hole system appears to have no well-established exact specification. It can only be applied to paper formats that are at least 240 mm high.
Another standard also occasionally used in the United States is a filebinder system. Its two holes are positioned symmetrically, with the centres 70 mm (2-3/4 inch) apart.
In Sweden, a four-hole national standard is almost exclusively used. The centres of the holes are 21mm, 70mm and 21 mm apart. The guides help keep the paper in a straight line.
The official name of this four-hole system is triohålning since it was adapted to the "Trio binder" which was awarded Swedish patent in 1890. The binder's inventor Andreas Tengwall supposedly named it after a consortium consisting of himself and two companions, i.e., a trio.
According to Shaugho Punchers Inc., the ideal 1 Hole Punch places the centre of the hole punched at 1.0 cm in from the left of a page and 4.0 cm down from the top of a page. According to Killeen Co., the punched hole should between 0.9 cm and 1.1 cm from the left hand side of a page and between 3.9 cm and 4.1 cm from the top of a page.
Uses of hole punches
Single hole punches
Single hole punches are often used to punch tickets, which indicates its credit has been used, and to make confetti when creating scrapbooks and other paper crafts. For applications needing a variety of hole shapes, a ticket punch may be used. A single hole punch differs from a ticket punch in having a shorter reach and no choice of hole shape.
In the United States, single hole punches are often used to punch holes through playing cards, rendering them "used." This helps cut down on cheating by eliminating any cards that may have been tainted by players. Paper drilling is also popular for this purpose.
A related office tool is the eyelet punch. This is a single-hole punch which also presses a metal fastening loop around the hole. It is used to permanently secure a few sheets of paper together which must not be separated or modified.
Multiple hole punches
Multiple hole punches typically make between one and eight holes at one time, the placement of which matches the spacing of the rings in a binder. For example the filofax system uses six holes in two groups of three.
With a few exceptions, two-hole and four-hole punches consistent with ISO 838 are the norm.
In the United States the three-hole punch is most common. Less frequently seen is the two-hole filebinder punch.
There are office models available for the perforation of 1 to 150 sheets of paper, and industrial models for up to 470 sheets. Most multiple-hole and many single-hole punches accumulate the waste paper circles (chads) in a chamber, which must be periodically emptied in order to facilitate the continued operation of the punch.
Paper drills are machines similar to a drill press that use hollow drill bits to drill through stacks of paper. The hollow bit design allows the chads to be ejected during drilling. Paper drills in the United States are most commonly either single-hole or three-hole in construction.
- br-online (German)
- "Appletonideas Punch Resources". Retrieved 2013-02-12.
- "Paper Punch & Cutter Resources". Retrieved 2009-08-12.
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