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--captions by vitac--
Www.Vitac.Com
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Captions paid for by
Discovery communications
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Narrator: the use of glass
As an artistic medium
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00:00:55,724 --> 00:00:58,034
Dates back to ancient egypt.
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Despite the obvious fragility
Of glass sculptures,
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00:01:01,551 --> 00:01:04,103
This art form
Has an enduring appeal.
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The transparency of glass
Often has a ghost-like quality.
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They're tangible works of art
That are skillfully crafted.
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With this glass sculpture
Of a horse,
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The artist's two passions
Come together --
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Art and horsemanship.
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The artist takes inspiration
From her horse,
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Observing the swell
Of his muscles as he romps
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In order to create the same
Sense of movement in glass.
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She then draws a series
Of sketches of the horse
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In different stances.
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These sketches are
An artistic study.
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They help her work out
The sculpture's form
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Before actually creating one.
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She cleans solid glass rods
To prepare them for sculpting.
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This is borosilicate glass,
Which is more resistant
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To thermal shock
Than other kinds of glass.
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00:02:04,965 --> 00:02:09,103
She brings the glass into the
Flame of a torch to soften it.
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00:02:09,103 --> 00:02:13,413
Once softened, she can fuse
Two of the rods together.
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00:02:13,413 --> 00:02:16,931
Then using tweezers and flat,
Knife-like tools,
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She sculpts the glass
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Into the shape
Of the horse's hips and legs.
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00:02:23,310 --> 00:02:26,068
She works quickly so the glass
Doesn't have a chance
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To cool and fracture.
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She adds a smaller piece of
Glass and forms it into a tail.
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She constantly turns the glass
As she works it to make sure
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It looks good from all angles.
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She melts glass in front of
The hips to build up the body
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00:02:47,896 --> 00:02:51,137
And shape the horse's belly,
Back, and chest.
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00:02:54,344 --> 00:02:57,344
This is intensive
And precision work.
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The piece must be exposed
To a well-adjusted flame
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And constantly moved
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So it doesn't become too hot
And melt too much.
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00:03:08,413 --> 00:03:11,758
She adds glass to the front
And sculpts the shoulders
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00:03:11,758 --> 00:03:13,586
And part of the front legs.
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00:03:16,379 --> 00:03:19,517
She removes a little piece
Of extra glass.
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00:03:19,517 --> 00:03:22,689
She deposits the sizzling,
Unwanted bit in water
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To cool it down
And dispose of it safely.
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00:03:27,241 --> 00:03:29,931
She does more work
On the front legs.
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00:03:29,931 --> 00:03:32,965
She'll refine them and form
Hooves later,
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00:03:32,965 --> 00:03:37,413
But now she bakes the partially
Sculpted glass horse in a kiln.
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This is the first annealing,
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00:03:39,103 --> 00:03:42,551
Which realigns molecules
To prevent cracking.
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00:03:42,551 --> 00:03:45,896
She forms the head and mane
Separately from the body.
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00:03:45,896 --> 00:03:47,827
This is more intricate work.
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The features are
Much more detailed,
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So she uses smaller tools.
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00:03:52,758 --> 00:03:54,862
Once she shapes the eye sockets,
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She melts little blobs
Of black glass into them.
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00:03:58,931 --> 00:04:01,689
She sculpts the eyes
With a flat knife.
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00:04:05,413 --> 00:04:09,172
She carves creases above them
To create an eyelid effect.
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00:04:11,413 --> 00:04:13,862
She adds glass for the ears.
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00:04:13,862 --> 00:04:16,172
Then, using a tool called
A masher,
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00:04:16,172 --> 00:04:20,724
She pinches the ears
To squeeze them thinner.
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00:04:20,724 --> 00:04:22,689
She heats them again.
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00:04:22,689 --> 00:04:25,965
This process can cause the ears
To stick together,
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00:04:25,965 --> 00:04:29,482
So she cuts them
To separate them.
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00:04:29,482 --> 00:04:32,000
She curls the ears
Using tweezers
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00:04:32,000 --> 00:04:34,551
And tweaks their position
On the horse's head.
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She melts the base
Of the head to the body,
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00:04:39,862 --> 00:04:42,137
And they become one.
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00:04:44,344 --> 00:04:48,103
She fuses more glass to the back
To craft a mane,
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00:04:48,103 --> 00:04:51,758
And after another annealing,
She returns to the legs.
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00:04:54,379 --> 00:04:56,724
She softens them with
A flame again
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00:04:56,724 --> 00:05:01,137
And adds definition
To the fetlock joints.
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00:05:01,137 --> 00:05:06,379
She cuts the tips to create
A more level surface.
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00:05:06,379 --> 00:05:09,551
She melts black glass
On to the ends of the legs
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00:05:09,551 --> 00:05:12,034
And sculpts it into
The shapes of hooves.
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00:05:14,344 --> 00:05:17,655
With a series of tools,
She tweaks each hoof
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00:05:17,655 --> 00:05:20,551
Until she's satisfied
This glass horse
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00:05:20,551 --> 00:05:23,793
Will stand
The way she wants it to.
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After another annealing,
She shines a polarized light
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Through the sculpture
And examines it for stresses
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That could compromise
Its structure.
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00:05:33,379 --> 00:05:38,137
Finding none, this galloping
Work of glass art is complete.
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It's been made with great care
And caring.
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00:05:52,827 --> 00:05:55,586
Narrator: to turn a regular car
Into a race car,
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One needs to change the pulley
System mounted to its engine.
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00:05:59,379 --> 00:06:02,275
Factory-installed pulley systems
Are heavy,
85
00:06:02,275 --> 00:06:03,931
And their pulley-size ratios
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00:06:03,931 --> 00:06:06,620
Are designed for driving
At low speeds.
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00:06:06,620 --> 00:06:09,241
A racing pulley system
Is lightweight
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00:06:09,241 --> 00:06:13,275
And has pulley ratios
For high-speed driving.
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00:06:13,275 --> 00:06:16,862
Replacing the factory-installed
Pulley system on a car engine
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00:06:16,862 --> 00:06:19,206
With one of these
Racing pulley systems
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Is like putting
A car on steroids.
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00:06:23,275 --> 00:06:25,379
The components of this system
Are determined
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By what the engine
Already comes with.
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00:06:27,724 --> 00:06:30,000
For example,
If the engine's water pump
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00:06:30,000 --> 00:06:31,965
Is too heavy for racing,
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00:06:31,965 --> 00:06:34,241
This company makes
A lightweight one
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00:06:34,241 --> 00:06:37,896
Along with a size-appropriate
Pulley to go with it.
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00:06:37,896 --> 00:06:40,310
To make a pulley,
An automatic saw
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00:06:40,310 --> 00:06:43,965
Cuts a patty off
An aluminum bar.
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00:06:43,965 --> 00:06:47,724
Workers then mount the patty
On a computer-guided lathe.
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00:06:47,724 --> 00:06:50,724
As the lathe spins,
Multiple tools shape
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00:06:50,724 --> 00:06:52,620
The patty into a pulley.
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00:06:56,000 --> 00:06:59,000
The first two tools drill
A hole in the center
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00:06:59,000 --> 00:07:02,137
And machine the overall shape.
105
00:07:02,137 --> 00:07:07,172
Then, this tool bores
The hole to a precise diameter.
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00:07:07,172 --> 00:07:09,310
This tool carves grooves
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00:07:09,310 --> 00:07:11,793
Along the perimeter
For the pulley belt.
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00:07:15,137 --> 00:07:18,172
This broaching tool makes
17 vertical grooves
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Inside the bored hole
Corresponding to grooves
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00:07:21,827 --> 00:07:26,034
On a shaft, locking
The pulley in place.
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00:07:26,034 --> 00:07:28,448
A worker removes
The partially-formed pulley
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00:07:28,448 --> 00:07:33,034
From the lathe and mounts it on
A computer-guided mill.
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00:07:33,034 --> 00:07:37,068
The mill's first tool drills
Six round holes.
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The next tool reshapes
Those holes into triangles
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00:07:40,413 --> 00:07:42,000
Known as windows.
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00:07:42,000 --> 00:07:46,137
This reduces
The pulley's weight.
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00:07:46,137 --> 00:07:49,413
The factory sends all pulleys
Out to a plating shop
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00:07:49,413 --> 00:07:51,482
Which coats the aluminum
With the hard,
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00:07:51,482 --> 00:07:55,586
Black protective finish
Known as anodizing.
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00:07:57,034 --> 00:08:00,275
This is a different type
Of crankshaft pulley.
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00:08:00,275 --> 00:08:03,517
To make it, the automated saw
First cuts a patty
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00:08:03,517 --> 00:08:05,965
From a smaller aluminum bar.
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00:08:05,965 --> 00:08:11,034
Then, a worker mounts it
On a computer-guided lathe.
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00:08:11,034 --> 00:08:13,896
After the first tool
Evens out the surface,
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00:08:13,896 --> 00:08:16,655
This tool drills a hole
Through the center.
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00:08:21,068 --> 00:08:23,275
The next tool enlarges
That hole.
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00:08:28,103 --> 00:08:31,724
The next tool cuts a female
Pattern inside the hole.
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00:08:31,724 --> 00:08:34,206
A female pattern has grooves
Which receive
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00:08:34,206 --> 00:08:37,655
Corresponding protruding areas
Of a male pattern.
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00:08:42,068 --> 00:08:45,620
The lathe then transfers
The patty to another spindle
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00:08:45,620 --> 00:08:48,413
To expose the opposite side
For machining.
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00:08:52,172 --> 00:08:54,310
The first tool shapes the back.
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00:09:00,827 --> 00:09:04,000
The next one cuts
A male pattern.
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00:09:04,000 --> 00:09:06,620
With a female pattern on
One side and a male pattern
135
00:09:06,620 --> 00:09:10,965
On the other, multiple pulleys
Can be stacked and interlocked
136
00:09:10,965 --> 00:09:13,448
To accurately align the system.
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00:09:14,724 --> 00:09:18,517
The final tool cuts straight
Teeth for a square-tooth belt.
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00:09:22,103 --> 00:09:24,793
When an original engine
Component is replaced
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00:09:24,793 --> 00:09:28,482
With a new, smaller, and lighter
One suitable for racing,
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00:09:28,482 --> 00:09:31,931
The factory must also make
A smaller, lighter bracket
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00:09:31,931 --> 00:09:35,379
To mount the new component
To the engine.
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00:09:35,379 --> 00:09:39,000
A computer-guided mill shapes
A rectangular piece of aluminum
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00:09:39,000 --> 00:09:41,034
Cut by the same automated saw
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00:09:41,034 --> 00:09:43,172
That cut the patties
For the pulleys.
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00:09:47,172 --> 00:09:51,137
Brackets, like pulleys,
Go out for anodizing.
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00:09:51,137 --> 00:09:53,172
When they come back
To this factory,
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00:09:53,172 --> 00:09:58,137
They get laser-printed
With a brand name and model.
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00:09:58,137 --> 00:09:59,379
Here's how the pulley system
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00:09:59,379 --> 00:10:01,827
Assembles on this
Particular engine.
150
00:10:01,827 --> 00:10:04,379
First, the technician bolts
An adapter
151
00:10:04,379 --> 00:10:06,379
To the harmonic balancer.
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00:10:06,379 --> 00:10:08,344
The harmonic balancer
Is a component
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00:10:08,344 --> 00:10:11,862
On all engines
That lessens vibration.
154
00:10:13,137 --> 00:10:15,586
Next, he installs
The new crankshaft pulley
155
00:10:15,586 --> 00:10:19,448
On to the adapter, attaching it
With a long central bolt
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00:10:19,448 --> 00:10:22,034
That extends beyond
The harmonic balancer
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00:10:22,034 --> 00:10:26,137
And into the engine's
Crankshaft.
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00:10:26,137 --> 00:10:28,724
He installs a new lightweight
Water pump,
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00:10:28,724 --> 00:10:31,310
Which has a new mounting bracket
For the alternator
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00:10:31,310 --> 00:10:34,103
Attached to its left side.
161
00:10:34,103 --> 00:10:36,862
Then, he bolts on a new
Water-pump pulley,
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00:10:36,862 --> 00:10:39,551
Which has grooves for two belts.
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00:10:39,551 --> 00:10:42,137
After mounting a new
Lightweight alternator,
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00:10:42,137 --> 00:10:44,793
He connects the water-pump
Pulley to the crankshaft
165
00:10:44,793 --> 00:10:48,034
And power steering pump pulleys
With one belt
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00:10:48,034 --> 00:10:51,275
And to the alternator pulley
With another belt.
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00:10:51,275 --> 00:10:54,862
This allows simultaneous
Steering, battery charging,
168
00:10:54,862 --> 00:10:57,551
And water circulating
To cool the engine.
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00:11:07,758 --> 00:11:10,241
Narrator: coiled copper devices
Called inductors
170
00:11:10,241 --> 00:11:13,068
Provide storage
For electrical circuits.
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00:11:13,068 --> 00:11:15,827
As electrical current
Flows through the coils,
172
00:11:15,827 --> 00:11:18,241
A magnetic field is produced.
173
00:11:18,241 --> 00:11:21,172
The inductor stores
The electromagnetic energy
174
00:11:21,172 --> 00:11:23,103
Until the circuit
Is ready for it.
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00:11:23,103 --> 00:11:26,172
They're one of the most
Important parts in the circuit.
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00:11:28,827 --> 00:11:31,862
Inductors come in many
Shapes and sizes.
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00:11:31,862 --> 00:11:34,896
Conductive windings surround
An iron-based core
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00:11:34,896 --> 00:11:37,689
To provide
Temporary energy storage
179
00:11:37,689 --> 00:11:41,379
And to regulate the current
Flowing through a circuit.
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00:11:41,379 --> 00:11:44,034
To make an inductor,
Manufactures use
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00:11:44,034 --> 00:11:46,965
Plenty of flame-resistant
Insulating material.
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00:11:46,965 --> 00:11:50,517
They cut sheets of it
To the desired dimensions.
183
00:11:50,517 --> 00:11:53,551
An operator programs this
An automatic shear
184
00:11:53,551 --> 00:11:57,517
To cut the electrical
Insulation into long strips.
185
00:11:57,517 --> 00:12:02,241
The hydraulically driven blade
Makes clean, straight cuts.
186
00:12:02,241 --> 00:12:05,275
These strips will be used
To insulate the inductor core
187
00:12:05,275 --> 00:12:07,620
And coils.
188
00:12:07,620 --> 00:12:10,724
A worker folds a rectangular
Piece of insulation
189
00:12:10,724 --> 00:12:14,517
Around an aluminum form
To start the inductor coil.
190
00:12:14,517 --> 00:12:17,827
She tapes the ends together.
191
00:12:17,827 --> 00:12:21,379
She pulls a strip of copper foil
To the insulation.
192
00:12:21,379 --> 00:12:24,655
She's pre-soldered a terminal
To the end of the foil,
193
00:12:24,655 --> 00:12:28,034
And she tapes the terminal
To the insulating material.
194
00:12:28,034 --> 00:12:30,137
She begins to wind
The copper foil
195
00:12:30,137 --> 00:12:33,724
Around the insulating
Material and stops.
196
00:12:33,724 --> 00:12:36,310
She places one of the long
Insulating strips
197
00:12:36,310 --> 00:12:39,827
Under the copper foil
And resumes winding.
198
00:12:39,827 --> 00:12:43,655
This prevents short circuits.
199
00:12:43,655 --> 00:12:46,931
She clamps the copper windings
Tightly together
200
00:12:46,931 --> 00:12:51,655
And tucks an extra piece of
The insulation under the copper.
201
00:12:51,655 --> 00:12:56,758
She hammers the copper
To flatten any kinks.
202
00:12:56,758 --> 00:12:58,275
She solders a second terminal
203
00:12:58,275 --> 00:13:01,793
To this end of
The copper foil windings.
204
00:13:01,793 --> 00:13:04,551
These terminals will be used
To connect the inductor
205
00:13:04,551 --> 00:13:06,241
To the electrical circuit.
206
00:13:10,862 --> 00:13:13,448
She holds the terminal in place
With a metal dowel
207
00:13:13,448 --> 00:13:17,965
And the soldering iron
Until the solder solidifies.
208
00:13:17,965 --> 00:13:21,689
She then cuts the copper strip
Along the edge of the terminal.
209
00:13:24,448 --> 00:13:28,344
She applies fiberglass tape
To the soldered terminal joint.
210
00:13:32,482 --> 00:13:35,068
She removes the clamp
And adds more tape
211
00:13:35,068 --> 00:13:37,172
To keep the terminal in place.
212
00:13:40,448 --> 00:13:42,379
She then winds fiberglas tape
213
00:13:42,379 --> 00:13:45,034
Around the inside
Of the inductor coil.
214
00:13:48,862 --> 00:13:52,517
This outer wrap will prevent
Shocks to anyone who might touch
215
00:13:52,517 --> 00:13:55,551
The inductor when it's part
Of an electrical circuit.
216
00:13:58,793 --> 00:14:02,310
Using a tough nylon block
To absorb the impact,
217
00:14:02,310 --> 00:14:07,862
She hammers the inductor coil
To make it more rectangular.
218
00:14:07,862 --> 00:14:11,620
She removes the coil
From the winding machine.
219
00:14:11,620 --> 00:14:15,965
Next up is this hard,
Polyester-infused fiberglass.
220
00:14:15,965 --> 00:14:18,379
Manufacturers will
Ultimately use it
221
00:14:18,379 --> 00:14:21,172
To insulate the core
And fill the gaps.
222
00:14:21,172 --> 00:14:24,517
With a hydraulic shear,
A worker cuts the fiberglass
223
00:14:24,517 --> 00:14:27,310
Into strips
That will fit in the core.
224
00:14:27,310 --> 00:14:29,172
Another worker clamps two of
225
00:14:29,172 --> 00:14:32,344
The insulated copper windings
Side by side.
226
00:14:32,344 --> 00:14:34,793
She inserts a c-shaped
Iron core
227
00:14:34,793 --> 00:14:37,034
In one end of
The copper windings
228
00:14:37,034 --> 00:14:41,068
And flips the inductor
Assembly over.
229
00:14:41,068 --> 00:14:43,241
She connects
The protruding terminals
230
00:14:43,241 --> 00:14:45,172
With a tin-copper jumper.
231
00:14:48,965 --> 00:14:52,896
She inserts insulating spacers
Into both cavities.
232
00:14:52,896 --> 00:14:55,241
These fiberglass spacers will
Fill the gap
233
00:14:55,241 --> 00:14:57,551
Between the two iron "C's."
234
00:14:59,758 --> 00:15:03,448
She installs the second
Half of the iron core.
235
00:15:03,448 --> 00:15:06,965
When alternating current is
Applied to the copper windings,
236
00:15:06,965 --> 00:15:09,862
It will create a magnetic field
In this core,
237
00:15:09,862 --> 00:15:12,862
And this is how
The energy will be stored.
238
00:15:12,862 --> 00:15:16,448
She tucks a couple of fiberglass
Insulating spacers between
239
00:15:16,448 --> 00:15:19,034
The iron "C's" and the coils.
240
00:15:19,034 --> 00:15:22,000
She drives them deeper
Into the inductor.
241
00:15:23,724 --> 00:15:27,379
She loops a stainless-steel band
Around the iron core
242
00:15:27,379 --> 00:15:31,413
And pulls it tight
With pneumatic tensioning tool.
243
00:15:31,413 --> 00:15:34,551
She solders the ends of the band
To secure it.
244
00:15:36,896 --> 00:15:39,620
Workers immerse the inductor
In a vat of varnish
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00:15:39,620 --> 00:15:41,793
Under vacuum pressure.
246
00:15:41,793 --> 00:15:44,000
The varnish completely seals
The inductor
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00:15:44,000 --> 00:15:46,000
Against dirt and moisture.
248
00:15:48,793 --> 00:15:53,413
This instrument detects any
Problems with the insulation.
249
00:15:53,413 --> 00:15:56,241
It's one of several
Tests conducted.
250
00:15:56,241 --> 00:15:58,413
If the inductor passes them all,
251
00:15:58,413 --> 00:16:00,655
It's ready for
The electrical circuit.
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00:16:11,655 --> 00:16:14,827
Narrator: a medicine ball has
Nothing to do with medicine
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00:16:14,827 --> 00:16:17,034
But everything
To do with health.
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00:16:17,034 --> 00:16:20,103
This heavy ball is an effective
Workout tool,
255
00:16:20,103 --> 00:16:22,965
Available in a variety
Of sizes and weights.
256
00:16:22,965 --> 00:16:26,310
It can be used for a wide range
Of exercises to improve
257
00:16:26,310 --> 00:16:31,793
Strength, coordination,
And cardiovascular fitness.
258
00:16:31,793 --> 00:16:36,103
Medicine balls are mass-produced
In a variety of materials.
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00:16:36,103 --> 00:16:38,137
This company is one
Of the few remaining
260
00:16:38,137 --> 00:16:43,517
Which craft traditional leather
Medicine balls entirely by hand.
261
00:16:43,517 --> 00:16:45,655
The craftsman uses shoe leather,
262
00:16:45,655 --> 00:16:49,034
Which is thicker and sturdier
Than garment leather.
263
00:16:49,034 --> 00:16:51,034
He places a pattern on top
264
00:16:51,034 --> 00:16:55,172
And cut loosely around it
With the utility knife.
265
00:16:55,172 --> 00:16:59,206
This steel-cutting die
Precision-shapes the panel.
266
00:16:59,206 --> 00:17:02,275
The craftsman places it
On the rough-cut panel.
267
00:17:02,275 --> 00:17:07,000
Then, with a press, forces the
Sharp die through the leather.
268
00:17:07,965 --> 00:17:11,310
The ball is made up of
Seven panels like this one.
269
00:17:14,137 --> 00:17:17,448
Once he has cut all seven,
He repeats the process
270
00:17:17,448 --> 00:17:21,517
With the circular pattern,
Then a circular die.
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00:17:21,517 --> 00:17:26,931
This cuts two leather circles --
One for each end of the ball.
272
00:17:26,931 --> 00:17:30,241
He cuts identical pieces
From nylon cloth.
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00:17:30,241 --> 00:17:34,655
These pieces will line the seven
Panels and two circles.
274
00:17:34,655 --> 00:17:39,103
For the circle linings,
He first hand-cuts squares.
275
00:17:39,103 --> 00:17:43,000
Then he cuts those squares
Into circles with the die.
276
00:17:49,862 --> 00:17:52,413
He clamps each lining
To its corresponding
277
00:17:52,413 --> 00:17:55,310
Leather piece
And sews them together
278
00:17:55,310 --> 00:17:57,655
With heavy-duty
Polyester thread.
279
00:17:57,655 --> 00:18:00,241
This industrial sewing machine
Is known as
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00:18:00,241 --> 00:18:03,068
A cylinder bed machine
Because the sewing surface
281
00:18:03,068 --> 00:18:05,482
Is cylindrical rather than flat,
282
00:18:05,482 --> 00:18:08,344
Which enables working
With a three-dimensional shape.
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00:18:11,931 --> 00:18:15,724
He takes two of the lined
Panels, and one at a time,
284
00:18:15,724 --> 00:18:18,000
Puts them back on the press,
285
00:18:18,000 --> 00:18:20,379
This time using a different
Cutting die.
286
00:18:24,896 --> 00:18:27,655
It cuts a notch
In eight lace holes.
287
00:18:31,896 --> 00:18:35,517
He then places one of these
Panels in an embossing press,
288
00:18:35,517 --> 00:18:38,482
Which heat-stamps the brand name
Into the leather.
289
00:18:40,896 --> 00:18:44,068
Using different dies,
He cuts pieces of vinyl
290
00:18:44,068 --> 00:18:48,862
To reinforce the lace holes,
Then sews them to the panels.
291
00:18:48,862 --> 00:18:51,344
This is the only area where
The bright red thread
292
00:18:51,344 --> 00:18:52,931
Will be visible.
293
00:18:57,034 --> 00:19:00,068
He sews the panels to each other
Until he's formed
294
00:19:00,068 --> 00:19:01,724
A closed circle.
295
00:19:07,068 --> 00:19:09,172
However, he doesn't
Yet stitch together
296
00:19:09,172 --> 00:19:12,965
That notched area between
The two sets of lace holes.
297
00:19:12,965 --> 00:19:16,862
First, he sews the lined
Leather circles to the ends.
298
00:19:19,896 --> 00:19:22,482
The ball's leather shell
Is complete,
299
00:19:22,482 --> 00:19:27,068
But inside out and with a gap
Between the lace holes.
300
00:19:27,068 --> 00:19:29,793
The craftsman hands it off to
A colleague
301
00:19:29,793 --> 00:19:32,379
Who inverts the shell
And presses the seams against
302
00:19:32,379 --> 00:19:35,448
A metal rod to stretch
And round them out.
303
00:19:38,896 --> 00:19:41,517
Now it's time
To stuff the shell.
304
00:19:41,517 --> 00:19:44,586
The worker takes shredded
Scraps of leather,
305
00:19:44,586 --> 00:19:47,379
Inserts them through the gap
Between the lace holes,
306
00:19:47,379 --> 00:19:50,620
Then compresses the scraps
With a thick wooden dowel.
307
00:19:53,931 --> 00:19:56,413
Once the ball is fully stuffed,
308
00:19:56,413 --> 00:19:59,689
He makes sure the ball
Has reached the target weight.
309
00:19:59,689 --> 00:20:01,068
Weight precision, however,
310
00:20:01,068 --> 00:20:03,724
Is less important
Than perfect roundness.
311
00:20:06,000 --> 00:20:09,517
To close up the ball,
He threads a thick rawhide lace
312
00:20:09,517 --> 00:20:12,103
Through a large brass needle
313
00:20:12,103 --> 00:20:15,000
And threads it through
The lace holes, pulling tightly.
314
00:20:17,103 --> 00:20:19,620
This is the same sturdy
Lacing configuration
315
00:20:19,620 --> 00:20:21,586
That's used on footballs.
316
00:20:27,275 --> 00:20:32,206
He uses two large, thick nails
To properly size the end loops.
317
00:20:37,517 --> 00:20:40,206
Then he snips off
The excess lace.
318
00:20:43,344 --> 00:20:45,862
And pokes each end
Inside a lace hole.
319
00:20:50,206 --> 00:20:52,793
Now he can safely remove
The nails.
320
00:20:55,931 --> 00:20:59,344
With a final pounding here
And there to perfect the shape,
321
00:20:59,344 --> 00:21:02,172
This medicine ball is ready
To pull its weight
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00:21:02,172 --> 00:21:04,965
In someone's exercise regiment.
26827
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