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					Getting Satisfactory Results in                                                              the
Manufacturing and Finishing Process

Many people dream of having their own factory to make this widget or that gadget. Some items
are dead easy to make an a manufacturing and assembly line can be set up in the garage. These
items will tend to be fairly low tech with only a few steps in the process. And example of this
would be something like a metal pressing shop where Step 1 would guillotine the metal sheets to
the optimal size. Step 2 would punch out the blanks, step 3 would be to press the blanks into the
desired shape and step 4 would involve machining the rough edges.

But other items require a far more sophisticated design with various components being created in
different streams and being assembled elsewhere. For example take a mobile phone.

There is a production line that is going to make the LCD displays
Another      line      would    mould     the       casing      (both    front    and      back)
Another            line         is          setting            up           the          keypad
Another             will         be           etching             the          PC           card
Then the PC card must be stuffed with the components and chips and resisters and diodes etc.
That            has          to          be              soldered           and           tested,
Then the streams start flowing together where the body has the LCD screen fitted, then that
moves along the line where the keyboard is fitted, these two are then connected to the PC board
which is then affixed.

After that of course comes the battery and the back and the test before the finished product can
be packed and shipped.

At various stages during this process some items will be particularly sensitive to dust. This is
true of the etching of the PC boards, the component stuffing and the soldering process. And so to
maintain a high quality most manufacturers have these processes within clean rooms

Clean room technology ensures that there is no dust or any fumes or anything else that can
contaminate the product. A clean room may be very small just covering a conveyor belt where
critical processes take place or can be huge involving whole assembly lines with specially
filtered air-conditioning and all staff wearing over shoes, and surgical gowns and masks.
Everything depends on the requirements of the process.

Certain food factories have this requirement as do drug manufacturers where sterility in the
manufacturing is vital to the end product. So one will often find clean rooms is these places.

The same is true of spray painting. Everyone at some stage or other has bought a can of spray
paint to paint something, and usually the results are less than satisfactory. The reason for this is
that spray painting and airbrushing requires consistency in distance and coverage and requires
and even steady touch. The slightest air current or dust particles floating around and the desired
finish is lost.

So professionals always spray in spray booths. This allows them to get a clean and even finish
with a coat of consistent thickness. For a truly fin job and item will be sprayed, baked, a
flattening sander will take off all the high spots. This process will be repeated and only the third
coat, which will be a very light touch provides the final high gloss finish which can only be
achieved by professionals in spray booths.

				
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