Wire Size

Category : Wire Binding

If you have not already read our blog on the differences in wire pitch this might be a good time to do so. It is not rocket science but the blog shows you pictures to better illustrate this confusing concept.

As you may know Australia has been using the metric system since the 1970’s. Many younger Australians are therefore unaware of the old imperial system of inches, feet, yards, miles etc. Younger people wishing to purchase binding wire ask for ‘9 slash 16’ wires (meaning 9/16″) or 5 over 8 dot dot (meaning 5/8″). So we all become confused!

Centimetres and Inches (and fractions of an inch)

Since our friends in America still use the old imperial system they therefore influence the manufacturing world of binding machines due to the USA’s large population. Hence why binding wire is generally advised in inches! Below we have converted the old imperial system into metric so it is less confusing when recognising the right wire diameter for specific document thickness.

2:1 or 23 loop wires available from 6.4mm diameter up to 31.8mm diameter

3:1 or 34 loop wires available from 4.8mm up to 14.3mm diameter.

Metric Imperial Sheets
4.8 3/16″ 15
6.4 1/4″ 35
7.9 5/16″ 50
9.5 3/8″ 65
11.1 7/16″ 80
12.7 1/2″ 95
14.3 9/16″ 110
15.9 5/8″ 120
19.0 3/4″ 150
22.2 7/8″ 180
25.4 1″ 210
28.6 1 1/8″ 240
31.8 1 1/4″ 270

2 Different Wire Hole Spacings

Category : Wire Binding

Double loop wire binding uses 2 different hole spacings relative to document thickness. These hole spacings use a ratio of how many holes there are to one inch. For example if the ratio (known as pitch) is 3 to 1 (3:1) then there will be three holes in every inch. If the ratio is 2 to 1 (2:1) there will be two holes in every inch.

Generally 3 to 1 wire (which has 34 double loops)  is used to bind documents up to 1.2cm in thickness. Holes spaced at 3 holes in one inch produce 34 holes down an A4 page.

If your documents are thicker than 1.2cm you will need to bind them in a 2 to 1 wire (which has 23 double loops).  The reason the holes need to be spaced further apart is for two reasons. Firstly the holes need to be larger to fit a thicker gauged wire which secures a heavier document. Also as the document becomes thicker there needs to be more slack so that the pages can turn freely.

If you bind both thin and thicker documents you can buy a dual pitch wire binding machine such as the WireMac DUO. This binder has both punching dies on board.


A3 Wire Binding

Category : Wire Binding

Many companies such as architects and engineering companies need to bind documents down the long edge of A3 (420mm length). Binding documents in this way requires a binding machine which has two essential features, a continuous punch guide and punch cancellation pins.

Two punches of each paper stack is required to complete this process. The first punch is performed then the document turned over. One of the holes is then hooked onto the continuous punch guide so that when the next series of holes are punched, they are in prefect alignment.

Once the punching  of the document is complete, 2 lengths of A4 binding wire is used to bind the document. The pages are inserted over the first wire then closed. The second A4 wire is then used to continue the desired extra length. Once the second wire is closed it is simply trimmed off in the spine of the document. The end product is a seamless long wire bound document.

Recommended machine to bind A3 wire documents is the WireMac E31 electric wire binding machine. It has every feature which allows you to create documents which  have that “wow” factor!

Creative Binding Pictures

Category : Binding Machines, Wire Binding

In all the years we have been dealing with office equipment, it still astounds us just how creative people can be with wire binding machines! Check out some of these pictures!


document bound in double loop wire with tabs or dividers

The divided sections in this wire bound document were created using a half moon die using our round corner machine. See "Round Corner Cutter" section












professional wire binding for easy to produce books

The sky's the limit with wire binding. Very sleek, very professional use of double loop wire using a WireMac machine

wireo or double loop wire is often called wire or steel coils or spirals

Create all kinds of interesting documents. This was done with a WireMac which produces perfect crisp holes for the professional edge. Again this needs to created on a binder with full punch cancellation. See our blog of the same name.








wire binding photo album bound in two to one pitch

Create special photo albums using two to one pitch wire binding machine. This album was created with the WireMac E21 wire binding machine.

punch cancellation effect using wiremac binding machine

Do you want your document to really stand out from the rest? Disengaging selected punch pins can achieve a "Wow!" factor. You will need a machine with full punch cancellation pins to achieve this effect! For more information, see our blog on "Punch Cancellation"

wire binding can transform old books into new fun books

This old "Little Golden" book was transformed into the cutest little scrap book using the WireMac 31


Category : Wire Binding

Wire Pitch

Wire pitch is such a difficult concept to get your head around. Although we have briefly touched on wire pitch in other blogs, people seem to still get a little confused when deciding to buy a single pitch machine or the dual pitch wire binder. Continue Reading

Researching for a wire binding machine

Category : Wire Binding

If You Have Been Asked to Do the Research for a Wire Binding Machine

Researching for a wire binding machine is not as straight forward as you would expect, particularly if the enquirer is not familiar with binding. It can be quite overwhelming for people who have been asked to do the research Continue Reading

How to Select the Correct Wire Size

Category : Wire Binding

How to Select the Correct Wire Size

Double loop wires come in a range of sizes or diameters. Naturally the thicker your document is the larger the wire diameter size will need to be.

Three to one pitch binding wires (34 loop wire) range from 4.8 mm diameter up to 14.3 mm diameter.

Two to one pitch binding wires (23 loop wire) range from 6.4 mm right up to 32 mm diameter double loop wire.

So how do you decide which wire size is the right size for your documents? Continue Reading

How do I choose Between Wire binder 3 to 1 or Wire Binder 2 to 1

Category : Binding Machines, Wire Binding

Wire binding is split into 2 different hole patterns known as pitch. For documents over 12mm in thickness you need to bind documents in a 2 holes to the inch pitch (2:1 pitch). This is because the holes are larger to fit the thicker gauged wire needed to secure thick documents. If your documents are thinner than 12mm in thickness you generally bind documents in 3 holes to the inch pitch (3:1 pitch). It is however possible to bind thin documents in 2:1, as small diameter wires are available in a 2:1 pitch. However generally people like the aesthetic appeal of a tighter bind for thinner documents. Check out more on our information page which explains all about pitch. It has heaps of pictures to illustrate the concept a little better.