Narrator: in the american
wild west, the g*n ruled,
And that g*n was usually
a six-sh**ter revolver.
Today, replicas
of those revolvers
Can take you back to dodge city,
And they do
at cowboy sh**ting competitions.
It's a chance to engage
In a little old-fashion
gunslinging for old time's sake.
With its six-shot cylinder
And innovative
c*ck mechanism,
The 1873 colt was carried
by the likes of jesse james.
They start
these automatic replicas
By shaping and machining
the g*n's frame.
A computerized blade
carves the cylinder.
It cuts slots
for the ammunition
And notches for rotating the
cylinder after a shot is fired.
A technician
files down rough edges
So the parts
will fit together perfectly.
He then screws the curved grip
and the trigger guard
To the frame.
He assembles the wooden grip
casing to the metal back strap
And attaches them to the grip.
Once he confirms
it's a good fit,
He removes the casing the writes
the g*n's serial number inside.
He stamps a matching number
onto the grip
And polishes it and the g*n's
frame to a glossy finish.
He now rolls the model number
And other
identifying information
Onto the g*n's barrel.
To add a bit of flourish,
An artist engraves designs
Copying the artwork
on an original colt.
Another worker now dips
the parts in hot salts,
Then in cold water.
A reaction occurs
That both hardens the parts
a bit and tints them.
In this case,
they turn a bronze color.
This is called
color case hardening.
The grip and trigger guard
Have been removed from
the g*n frame for color casing.
This makes it easier
for the technician
To install the cartridge
loading gate on the frame.
He files down the mechanism
for rotating the cylinder
To make the dimensions perfect.
He then inserts a bushing
and a pin
In the cylinder's center.
He uses that pin to install
the cylinder in the g*n frame.
The pin will also serve
as the axis
For the cylinder
to revolve on.
He slides a couple of test slugs
into the chambers
To confirm the gap between
the cylinder and g*n frame
Is spot on.
He then fits the g*n barrel
to the frame.
And, using
a special measuring rod,
He checks the alignment
of the cylinder and barrel.
He tightens the barrel
to the g*n frame,
Using a stick as a lever.
The technician aims
the assembled g*n
And eyeballs the alignment
of the barrel to the frame.
Once he's certain
The configuration
is right on target,
He installs the g*n's hammer
and trigger.
He pops the cylinder
back into the g*n frame
And inserts the rod
for ejecting spent ammunition.
He screws a spring
into the side of the hammer
And c*ck it
in its three different positions
To verify that it's
in working order.
He then reattaches the grip
and trigger guard.
He assembles a flat spring
to the curved grip.
This is the main spring.
It transfers energy
from the trigger to the hammer
To cause the revolver to fire.
Then it's over
to a government testing facility
Called the proof house.
Behind bulletproof glass,
Special equipment
fires ammunition
At three times
the usual operating pressure.
If the g*n can handle this,
it's deemed safe to operate.
After a few more parts
have been color cased,
This revolver replica is ready
for its target market.
And that would be history buffs
Who are interested
in a real blast from the past.
Narrator: arc trainers can
give you a full-body workout.
They provide a number
of exercise programs
To choose from,
Like strength training,
weight loss, and cardio.
They monitor such things
As heart rate
and calories burned.
Like any piece
of exercise equipment,
Using one properly is the key
to a safe and healthy workout.
Arc trainers are made
to give you
A wide range of incline
and resistance levels
To let you train as easy
or as hard as you like.
To start, a tube laser
Machine-cuts and profiles
the steel tubing
That will make
the arc trainer's side frame.
A worker cleans the steel tubes,
then runs them
Through a computer-controlled
roll-forming machine.
This machine shapes
all the steel
Used to build
the arc trainer's frame.
They use a robot to weld
all the parts together
Because robotic welding
is more consistent and accurate
Than hand-welding.
The completed frames
then get a surface preparation,
Giving the steel
a uniform finish
That is now ready
for powder painting.
Workers then paint the frames
Using an electrostatic
paint process.
These g*ns spray electrically
charged paint particles
That are drawn
to the grounded frames
In a smooth and even coat.
The frames then bake in an oven
for 40 minutes
To cure the paint.
Next come the handlebars.
A worker then makes them
by lubricating a rubber tube
And sliding it
onto an assembly frame.
He then locks
a preformed metal tube in place
And lubricates it, as well.
He turns a handwheel,
Which brings
the two tubes together,
Forming the handgrip.
He completes the assembly
by screwing on an end cap.
Meanwhile, a worker assembles
the control panel
By putting on the overlays
for the user interface.
She then hooks up
the printed circuit board
That controls the unit.
She closes the housing
But leaves
the connectors exposed
For connection
to the mainframe later.
A worker then attaches a steel
support fixture onto the frame.
Next comes
this drive-wheel assembly,
Which he bolts
onto the support fixture.
He puts a drive belt
around a pulley
That provides various
resistance levels for the user
And rolls the belt
onto the drive wheel.
He then uses a pneumatic tool
to tighten down the pulley,
Which stretches the drive belt
And sets it
to the appropriate tension.
Next, he attaches
the computer board
That controls
the various fitness programs.
A worker then installs
the leg bars
Onto the arc trainer's frame
And attaches a foot pedal
onto each leg bar.
He installs linkage bars
onto the drive-wheel assembly.
Then he aligns the drive wheel
And puts on
the molded front housing...
Followed by
the protective side covers.
He connects a linkage bar
That extends from each leg bar
to the drive wheel,
Then connects one linkage bar
to each arm handle.
He makes sure all the linkage
bars are working properly.
Finally, he tests
The free-floating foot pedals
and the dual-action arms,
As well as all the other
functions and features.
These arc trainers are
high-tech exercise machines.
Some models even come
with a tv.
Narrator:
used-oil furnaces generate heat
By burning used oil
without having to refine it.
These furnaces are found
in automobile shops,
Maintenance facilities,
and construction sites.
Transport fleets and trucking
companies also use them
To turn the used oil
they produce
Into heat for their facilities.
It takes a special furnace
to burn used oil.
Used oil is thick and dirty
Compared
to residential fuel oil
And must be turned
into a fine mist
To burn properly.
It all starts with
a computer-controlled laser
Making what's called
the front and rear flue plates
Out of steel.
The plates
for this hot-air furnace
Are made of stainless
or hot-rolled steel
Depending on the size
of the unit.
A worker then makes what's
known as the heat exchanger
By joining
the flue plates together
With steel tubes
called flue tubes.
This device is called
a swagger machine.
It expands just the ends
of the flue tubes,
Binding them in place
with the flue plate.
Next, he assembles the section
in which hot gases collect
After passing
through the flue tubes
On their way
out of the furnace.
He then sets
a combustion chamber
On the top
of the heat exchanger
And welds them together.
He completes
the heat-exchanger assembly
By welding on a base equipped
with two air-deflector plates.
These square plates
help direct the ambient air
As it enters the furnace
And circulates
around the combustion chamber.
Meanwhile, an electrostatic
powder-coating machine
Paints the outside covers
for the furnace.
Next, they put
on inner air deflectors,
Then assemble the cabinet.
They bolt everything in place,
then put on an insulated door.
Now he hooks up
a blower control box.
This electrical box regulates
When hot air
is sent into a room.
A worker then connects
a tester box
To the temperature controls
That measure the temperature
inside the furnace.
He runs a number of tests
To confirm that both the blower
and the burner
Will turn on or off
when they're supposed to.
He verifies the operation
of the door
That allows
for cleaning out ash residue.
A technician installs
a 100-watt pencil heater
Inside a brass nozzle adaptor,
Then threads a thermostat
into it.
This nozzle adaptor
heats the oil
And turns it into a fine mist
so it burns properly.
She then attaches assembly
fittings to the adaptor
So she can later mount it
inside a burner housing.
She checks these fittings
with a leveling tool
To ensure the adaptor will go
on straight inside the housing.
She also installs an assembly
that controls
Oil flow, temperature,
and air pressure.
Then she mounts
the nozzle adaptor
And covers it
with a retention head
That shapes the flame
for optimal heat,
Completing the burner assembly.
A worker then hooks up
The used-oil
and compressed-air lines
To begin testing the burner.
He turns on the oil,
ignites the burner,
And looks through
an observation port
To verify the burner
is working properly.
A closer look shows the flame
is at the right intensity
For optimal heat
with minimal emissions.
The furnace is now ready to turn
used oil into useful heat.
Narrator: top-of-the-line pizza
cutters and vegetable peelers
Can be a pleasure to use.
They make preparing and serving
your favorite foods
Quicker and easier
And are ergonomically designed
for style and comfort.
They are also easy to clean
and guaranteed for life.
Vegetable peelers and pizza
cutters work like a charm,
Making straight cuts
Without damaging your pans
or your fingers.
Quality pizza cutters start
With cutlery-grade,
high-carbon stainless steel
From which a stamping press
punches the cutter blades.
The blades go
Through a three-step
heat-treating process.
First, they enter
a high-temperature furnace.
Then it's into a deep freezer
To maximize hardness
and corrosion resistance.
Finally, they go
into a tempering oven,
Which increases the durability
of the metal.
A polishing machine
with two buffing heads
Then polishes both sides
of the blade,
Giving it a protective
and cosmetic finish.
A worker than loads the blade
onto a bevel-grinding machine
That thins out the edge
of the blade.
It grinds a beveled edge
that is thin enough to cut pizza
But not sharp enough
To cut your finger
or damage a cutting surface.
A worker puts
a steel-bar insert
Into an injection
molding machine
That makes
the soft-polymer handle.
He then cools it down in water.
He puts the handles
on an extraction fixture
Which removes the inserts,
Making the handles
ready for assembly
Along with all
the other molded parts.
He then attaches what's called
a swing arm to the blade holder,
And he secures it in place
with a screw.
He dips the tip of the blade
holder into lubricant
And uses
a pneumatic-assembly fixture
To insert the blade holder
into the handle permanently.
Using the swing arm,
He snap-fits the blade
onto the blade holder
And hides the swing-arm screw
with a cover cap.
Finally, he ensures the blade
rolls properly and safely
So it will cut through pizza
with ease.
The finest vegetable peelers
Also do their job
quickly and effectively.
They also start
With cutlery-grade
stainless-steel blades
That undergo tempering
To ensure the metal is durable
and corrosion-resistant.
After cleaning and polishing,
The blades are dried
In a vibrating medium
of ground corncob,
Then removed from the tub
by a magnet.
The blades are now ready
for sharpening.
A worker mounts
the peeler blades
On a computer-controlled
edge-grinding machine.
The grinder sharpens one edge
of each blade at a time.
Once both sides of the peeler
blades are fully sharpened,
They're ready for assembly.
Meanwhile,
an injection molding machine
Makes the blade holders.
A worker dips each blade holder
into lubricant
And inserts it into the molded
soft-polymer handle,
Joining them together
permanently.
Finally, he attaches the blade
By deflecting the holder
just enough
To insert the tip of the blade
into a tiny hole.
These top-quality
vegetable peelers
Are sold individually
or in combination
With other kitchen utensils
like pizza cutters,
And they sure are handy
in the kitchen,
Even if you're not.
If you have any comments
about the show,
Or if you'd like to suggest
topics for future shows,
Drop us a line at...
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