lots of handles. We suppose it may not be the most important aspect of choosing a binding system

Uniquely positioned as the only 5:1 pitch
combo binding system on the market, the Akiles DuoMac C51 is presented
as a solution for businesses that want the ability to do a variety of
binding styles all on one machine. Here is a rundown of what we
consider to be the DuoMac C51's strengths and weaknesses.

Strengths:

1. The chief feature of the DuoMac C51 is that it is the
   only five to one pitch combination plastic comb and spiral coil binding
   system on the market. With this machine you can punch hole patterns
   that can be used for plastic combs, and there is also a comb opener to
   complete the process. There is also a wire close included, so you can
   use this machine so you can bind books and documents in the slightly
   more durable and elegant spiral-o style as well. We thought this was
   some pretty great versatility for just one machine.
2. 
   In other words, with just this one machine, it is possible to do three
   completely different binding styles. Three different looks, one
   machine. This is pretty unusual in the binding machine world, and can
   see how this would be a great advantage for really any size business
   that wants some flexibility in the types of docs that they want to be
   able to produce.
3. Comb binding is one of the
   cheapest, easiest, and most common binding systems on the market, and
   the DuoMac C51 is able to produce books with comb bindings from three
   sixteenths to two inches in diameter.
4. Five to
   one pitch spiral coil offers a sophisticated professional look and the
   DuoMac C51 is one of the only machines on the market that is able to
   pull it off. This is a great thing for businesses that want to be able
   to have a more distinctive look for their documents on occasion.
5. 
   Some of the other great features that come with the DuoMac C51 are the
   multiple handle operation, that makes the machine safe, quick and easy
   to use, the continuous punching guides, and - very important for a
   machine with so many capabilities - a depth of punch margin control.
   This feature really helps to ensure the durability and usability of the
   finished books.

Weaknesses:

1. When you endeavor to create a versatile machine like
   this, we suppose that there are inevitably things that are going to
   have to be left out. That being said, we would have liked to see the
   inclusion of an electric spiral coil inserter. You can't have
   everything, though, so we highly recommend that if you are going to do
   much spiral coil binding, you find a standalone inserter to go along
   with the DuoMac C51.
2. Lots of features, lots of
   handles. We suppose it may not be the most important aspect of choosing
   a binding system, but the DuoMac C51 looks a little bit unwieldy, and
   has a bigger footprint than you might be expecting.
3. 
   You should be aware that if you plan on doing some binding in the 5 to
   1 pitch, you will need to prepare well ahead of time to get your
   supplies on hand as they can be a little bit hard to find, or may take
   a few days to be made once ordered.