Also, seal components in which inertness and ductility are significant, are available in Ketron peek plastic. Another group of plastics is the amorphous materials such as Ultem, Radel and polycarbonate.

These plastics are for structural parts Vibratory Tumbling Media Factory that can operate in moderate to high temperatures, and have high resistance to steam. They are also used in making electronic components, because they have remarkable insulating characteristics. However, amorphous plastics are vulnerable to stress cracking.

Imidized materials are also precision plastic because of their ultimate high heat resistance. Polymers like vespel, and torlon can reach higher operating temperatures than any other plastic substance, before softening and breaking down.

Some of its applications are structural, bearing and wear. Imidized plastics possess good chemical resistance. But, imidized plasticÂ’s drawback is its cost, highly expensive, hence, it is used only in extreme conditions.

G-10 and G-11 materials are resin-layered precision plastic, and are thermo set. To add strength to them, strengthening materials are layered into the resin. Among the strengthening materials is cloth, paper and canvass.

Thermo precision plastic is good for structural and electronic applications. Knowing the types of plastic and their properties can help you make the right choice for your machined plastic parts.

The Akiles Coilmac EPI, a desktop unit that can still produce at high

volume, is an all-electric coil binding system

designed for medium to large sized organizations that do a fair amount

of binding. Here is a brief overview of this machine's strengths and

weaknesses.

A desktop unit that can still produce at high

volume, the Akiles Coilmac EPI is an all-electric coil binding system

designed for medium to large sized organizations that do a fair amount

of binding. Here is a brief overview of this machine's strengths and

weaknesses.

Strengths:

The punching capacity of

the Coilmac EPI is easily one of the largest that is available on the

market. Officially stated at twenty five sheets of twenty pound paper,

we found that it really worked best at around twenty two. Still, that's

a lot of sheets, and it will get you quickly through even the largest

projects. This machine can also punch two clear covers at one time. The

foot pedal control of the Coilmac EPI is a great feature that makes it

possible for you to hold onto your documents with both hands while you

are doing your punching. We found that this was really handy for

increasing the punch quality when working with sheet numbers at or near

the top of the machine's capabilities. Plus you can operate the coil

inserter using your foot pedal by simply flipping the switch located on

the front of the machine. The Coilmac EPI features an open

throat design which allows the user to punch documents that are longer

than the number of pins available. The continuous punching guide

enables you to align the stack, flip it over, and punch the rest of the

holes. We found the whole thing to be a fairly easy process even though

we didn't think we would have to do it very often. The standard 13 inch

width of the machine should be more than adequate to get you through

the vast majority of jobs. While it only represents about

a thirty dollar value, and we are talking about a machine that costs a

little bit of money, we did find it nice that the Coilmac EPI comes

with a pair of high quality crimping pliers. This tool is so important

to the process that we can't imagine anyone attempting spiral coil

binding without them. Another couple features that we

really appreciated about the Coilmac EPI were the depth of margin punch

control which allows you to set the correct punch from the edge of the

document (increasing the usability and durability of larger documents),

and the open throat design that lets you bind letter, legal, as well as

A4 and A5 sized sheets with ease. The Coilmac EPI appears

to us to be extraordinarily well built, and we see no reason why it

wouldn't last the user for a good many years of daily use.

Weaknesses:

For

all its benefits, the Coilmac EPI does not include fully disengageable

dies. Although for the vast majority of jobs this won't matter in the

least, it is a nice feature to have when you are going to be producing

documents that are custom sized. For this feature you will need to step

up to the CoilMac EPI+ We would have liked to see this

system come with separate foot pedals for inserting and punching. It is

currently designed so that the user must flip a switch to toggle

between functions. It can get a little tedious if you are punching and

binding one document at a time. You would be better off doing all your

punching first, then all your inserting. For larger volume

projects, you may want to purchase a standalone inserter so that one

person can work on punching while another works on inserting and

crimping.

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