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The Sterling Coilmaster III is an automatic plastic coil binder - details see: https://www.machineto.com/the-sterling-coilmaster-iii-automatic-plastic-coil-binding-system-10072315

The Sterling® Coilmaster III is a heavy duty automatic plastic coil inserter designed for high production. This machine binds books from 8 mm in diameter to 32 mm in diameter, and up to 50 mm in diameter with the optional thick book attachment. Bind books as small as 4" X 4" up to calendars 17" long. The machine can also be modified to handle larger books such as art pads.

The Coilmaster® III inserter includes a patented spreading device that allows for binding books with head and foot margins of up to 3/16 of an inch (4.7mm). It is possible to choose the size of your margin. No matter what size the book is, the Coilmaster will allow you to center the hole pattern on the sheet. This is especially important on odd sized books.

You can pull the outside pins, prior to punching, to ensure that an attractive margin (the distance between the first hole and the head of the book or the last hole and the foot of the book) is produced. This is the time honored standard when binding for double loop wire. This can now be achieved in plastic spiral with the patented spreading device on the Sterling Coilmaster III.

All other automatic coil binders do not allow you to use a margin that is larger than the bridge (the distance between two holes). Therefore you must make sure that the sheet fits exactly between the pins of the die pattern you are using. If the sheet is too large and forces you to punch a partial hole you must trim the book down, or bind the book another way.

Since many books are not exactly 11 inches, or A4, this becomes a common occurrence. Since other machines force you to use a larger hole size than the Sterling® Coilmaster III, the result will be a thinner margin. This is the reason other manufacture's recommend an oval hole. The ease of spinning in the coil is the same with round or oval holes. Oval dies tend to be much more expensive.

The Coilmaster® binds books punched with standard dies. Use round holes or oval holes. Pick the pitch you want to work with: 4:1, 5:1, 6 mm center to center, 8 mm center to center, 3:1, 2.5:1 or any pitch imaginable.

The Thick Book Attachment allows for the binding of books up to 50 mm in diameter. This modification includes: A vibrating jogger, 3:1 or 2.5:1 combs (this clamps the book and guides the coil), and extra large knives. The Coilmaker can also be modified to have larger gaps put in the tracks of the conveyor and a larger blower.

Features

The only patented plastic coil former in North America.

Insert plastic coil at speeds up to 700 BPH.

Bind books with round or oval holes.

Bind books with any pitch.

Inserts plastic coil from the first hole onwards.

Cuts and crimps automatically.

Bind books with healthy 3/16" (4.7mm) margins.

Bind books from 8 mm to 50 mm

See a video at: http://spielassociates.com/plastic-coil-binders-and-formers.html