The Akiles Duomac 421 is a designed to provide organizations the choice between three different styles of binding.The Duomac 421 is built from heavy duty metal

components and is designed for years of use inside a small to medium

sized company.It is an excellent binding machine that offers

versatility, durability and the ability to create highly professional

documents on demand.

Overview: The Akiles Duomac 421 is a designed to provide organizations the choice between three different styles of binding.It

produces two different hole-patterns. This allows companies to choose

the style of binding that is ultrasonic welding machine the best fit for different types of

deliverables.The Duomac 421 is built from heavy duty metal

components and is designed for years of use inside a small to medium

sized company.It is an excellent binding machine that offers

versatility, durability and the ability to create highly professional

documents on demand.

Strengths / Features:

The DuoMac 421 can punch two completely different hole-patterns. It can

produce a round hole patter with four holes per inch. This is designed

for use with four to one pitch spiral coil binding. It can also produce

a 2:1 pitch rectangular hole-pattern which is designed for use with 2:1

pitch twin loop wire. The 2:1 pitch pattern can also be used to bind

thick books using 0.400 pitch spiral coils. Thus, the two hole patterns

allow the Duomac 421 to bind documents using three different binding

styles.The 4:1 pitch punching throat on this machine has a

thirteen inch throat with five disengageable punching pins. Using these

five disengageable dies it is possible to bind documents with all of

the most common paper sizes including: letter, legal, A4, half letter,

and A5 papers.The 2:1 pitch punch is 14" inches long and

offers fully disengageable punching pins. This means it is possible to

punch any size document up to fourteen inches in length with a 2:1

pitch rectangular hole pattern.Both punches on the DuoMac

421 have open throats. Using the open throat design, it is possible to

punch documents that are longer than 13" or 14" with a two step

punching process.This DuoMac-421 includes a heavy duty wire

closer on the front of the machine. The closer is capable of handling

two to one pitch wires that are between 3/16" and 1-1/4" in diameter.

The wire closer on this system is made of high quality steel components

and should have no problem remaining accurate over time.The

421 Duomac also includes a pair of coil crimpers. These crimping pliers

are designed to cut and crimp the ends of your coil to finish your

spiral bound documents.

Weaknesses / Limitations:

One

thing that the Duomac-421 is missing is a spiral coil inserter. Users

who need to bind a few documents with coil will have no problem

spinning the coils on by hand. However, inserting coils by hand is very

time consuming and tedious. Organizations that need to bind documents

using 4:1 pitch coil on a daily or weekly basis should definitely

consider purchasing a modular coil inserter. Akiles recommends that

this machine be purchased and used in conjunction with the Akiles Roll

@ Coil. Because 2.5:1 pitch coils are so large and there is

a slight variance in the pitch between the holes and the coil, they

will need to be inserted by hand. This isn't a huge deal since most

large coil books are assembled by hand anyway. Large sized 4:1 pitch

books with also need to be inserted by hand.Each of the

three binding styles offered by this machine have limitations in the

size of books that they can bind. Four to one spiral coil is the most

versatile and can be used to bind documents that are between 6mm and

50mm. However, inserting large sized 4:1 pitch coils onto your books is

much like trying to insert a slinky onto the edge of a book. Two to one

pitch wire binding spines are available in sizes ranging from 1/4" up

to 1-1/4" (1-1/2" spines are available but the wire closer on the

Duomac 421 isn't compatible with spines that large). Spiral coils that

are 2.5:1 pitch (also known as 0.400 pitch coils) are available in

sizes from 20mm up to 56mm and use larger filament to make inserting

easier.The DuoMac 421 has a lot of great features. However,

including so many features on one binding machine has the tendency to

make that machine fairly large and somewhat confusing. Although the

Duomac421 is clearly labeled , it can be a little bit intimidating to

inexperienced users.

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