Original subtitles

--Captions by VITAC-- www.vitac.com

CAPTIONS PAID FOR BY DISCOVERY COMMUNICATIONS

Narrator: GOLFERS USE DIFFERENT TYPES OF CLUBS

FOR DIFFERENT TYPES OF SHOTS --

WOODS FOR LONG-DISTANCE SHOTS OFF A TEE,

PUTTERS TO GENTLY ROLL THE BALL INTO THE CUP,

AND IRONS FOR EVERYTHING IN BETWEEN.

THAT'S WHY IN GOLF,

CHOOSING THE RIGHT CLUB FOR THE SHOT

IS A KEY PART OF GAME STRATEGY.

THE HEADS OF THESE GOLF CLUBS

ARE MADE FROM AEROSPACE-GRADE STAINLESS STEEL.

TO PRODUCE THEM,

THE FACTORY BEGINS WITH A WAX REPLICA OF THE CLUBHEAD.

TO MAKE THIS WAX PATTERN, AS IT'S CALLED,

THEY INJECT HOT WAX INTO A MOLD.

THEY EXTRACT THE PATTERN

AND SNIP OFF THE BULK OF THE EXCESS WAX.

USING HOT WAX AS AN ADHESIVE,

A ROBOT JOINS SEVERAL PATTERNS TO OTHER WAX PARTS

IN THE SHAPE OF GATES AND RUNNERS,

THE TERM FOR THE CHANNELS

THAT GUIDE MOLTEN METAL INTO THE CASTING MOLD.

THEN THE ROBOT DIPS THESE PATTERNS

INTO LIQUID CERAMIC MATERIAL FOUR TIMES,

WITH A SHOWER OF SILICA SAND IN BETWEEN EACH COAT.

THE CERAMIC AND SAND HARDEN,

FORMING A SHELL AROUND THE WAX PATTERNS.

THEN THE FACTORY MELTS OUT THE WAX.

THE SHELL IS NOW A MOLD

WITH WHICH TO CAST THE METAL CLUBHEADS.

ON THE CASTING FLOOR,

A FURNACE HEATS STEEL BARS TO 3,000 DEGREES FAHRENHEIT --

WELL BEYOND THE MELTING POINT.

MEANWHILE, ANOTHER FURNACE HEATS THE MOLDS

TO 1,800 DEGREES FAHRENHEIT.

THIS BURNS OUT ANY REMAINING WAX.

IT ALSO FIRES THE CERAMIC,

MAKING IT STRONG ENOUGH TO WITHSTAND MOLTEN METAL.

THE POURING TECHNIQUE IS CRITICAL.

THE METAL MUST FLOW AT A CONSISTENT RATE

TO PREVENT THE FORMATION OF AIR BUBBLES.

AFTER FIVE HOURS,

A PNEUMATIC HAMMER BREAKS APART THE MOLD.

WORKERS SAW OFF THE GATES AND RUNNERS,

SEPARATING THE CLUBHEADS.

THEN THEY GRIND OFF

THE LAST REMNANTS OF THE GATES AND RUNNERS.

A TURNTABLE RUNS THE CLUBHEADS THROUGH A SANDBLASTER,

WHICH GIVES THE METAL A PARTICULAR FINISH.

NEXT, THEY STICK ON A METAL BADGE

BEARING THE CLUB'S MODEL NAME.

THEY APPLY A DOT OF AUTOMOTIVE PAINT.

THE COLOR IDENTIFIES THE ANGLE OF THE CLUB.

THERE ARE 12 DIFFERENT ANGLES.

NOW THEY LINE THE NECK OF THE CLUBHEAD WITH EPOXY,

THEN COAT THE END OF THE SHAFT WITH EPOXY

AND SLIP IT INTO THE NECK.

A PNEUMATIC HAMMER PUSHES THE SHAFT IN AS AS FAR AS IT CAN GO.

THE SHAFT IS MADE OF EITHER EXTRUDED STEEL OR CARBON FIBER.

NOW IT'S TIME TO WORK ON THE SHAFT.

FIRST, THEY CUT IT TO THE RIGHT LENGTH,

DEPENDING ON THE MODEL.

THEN THEY PUT THE SHAFT ON A SPINDLE

AND WRAP THE TOP 10 INCHES IN DOUBLE-SIDED TAPE

TO HOLD THE CLUB'S RUBBER GRIP.

THEY LUBRICATE THE TAPE AND THE INSIDE OF THE GRIP

BEFORE SLIDING THE GRIP OVER THE SHAFT.

A LASER LINE HELPS THEM ALIGN THE GRIP IN THE RIGHT POSITION.

THIS IS CRITICAL, BECAUSE THE GRIP IS THE GOLFER'S GUIDE

TO CORRECT HAND POSITIONING,

WHICH IS ESSENTIAL TO A GOOD SWING.

NEXT, A COMPUTER READS THE LIE,

THE TERM FOR THE CLUBHEAD'S ANGLE RELATIVE TO THE GROUND.

THEN IT READS THE LOFT --

THE TERM FOR THE ANGLE OF THE CLUBHEAD'S FACE.

THE COMPUTER THEN TELLS THE TECHNICIAN

WHAT ADJUSTMENTS TO MAKE.

ONCE HE'S MADE THE ADJUSTMENTS,

THE COMPUTER REANALYZES THE NEW LOFT AND LIE

TO ENSURE THEY'RE PERFECT.

FINALLY, THE GOLF CLUB GOES FOR A WEIGH-IN.

THE SCALE SHOWS THAT THIS CLUB

NEEDS ANOTHER 18 GRAMS TO BRING IT UP TO SPEC,

SO THEY AFFIX AN 18-GRAM WEIGHT MADE OF THERMOPLASTIC AND METAL.

ACTUALLY, IT WEIGHS SLIGHTLY LESS THAN 18 GRAMS,

BECAUSE THEY FACTOR IN THE WEIGHT OF THE EPOXY GLUE.

IT'S THIS TYPE OF PRECISION THAT ENSURE THESE GOLF CLUBS

FIT THE QUALITY SPECIFICATIONS TO A "T."

Narrator: THE WAFFLE STARTED OUT IN THE MIDDLE AGES

AS A FLAT WAFER MADE NOT FROM WHEAT FLOUR,

BUT FROM OATS OR BARLEY.

AS ITS POPULARITY SPREAD THROUGHOUT EUROPE,

MANY VARIATIONS OF SHAPE AND RECIPE DEVELOPED.

THE INTRODUCTION OF LEAVENING INGREDIENTS

GAVE RISE TO THE FLUFFY HONEYCOMB BREAKFAST CAKE

WE KNOW TODAY.

THE INTRODUCTION OF FROZEN WAFFLES IN THE 1950s

MARKED THE DAWN OF A NEW ERA FOR THESE BREAKFAST BATTER CAKES.

MAKING YOUR MORNING WAFFLES WAS SUDDENLY A SNAP.

ALL THE BIG PREP WORK TAKES PLACE AT THE BIG FACTORY.

THEY ADD FLAVORINGS LIKE BERRIES TO A FLOUR-BASED WAFFLE MIX,

AND THEN TURN TO THE LIQUID INGREDIENTS --

WATER, CANOLA OIL, AND LIQUID CANE SUGAR.

THEY POUR THEM INTO A BIG TANK AND MIX THOROUGHLY.

THEN THEY'RE READY TO THICKEN IT INTO A BATTER

WITH A FLOUR-BASED WAFFLE PREMIX.

IT ALSO INCLUDES BAKING POWDER, WHICH REACTS WITH WATER

TO CAUSE POCKETS OF CARBON DIOXIDE TO FORM

FOR A LEAVENING AFFECT THAT WILL CONTINUE DURING BAKING.

AFTER ADDING MORE BERRIES, THIS BATTER IS COMPLETE,

AND THERE'S ENOUGH IN THIS ONE TANK

TO PRODUCE 3,600 WAFFLES.

HOT WAFFLE IRONS MOVE PAST A SPRAYER

FOR A MISTING WITH A NONSTICK COATING.

DOWN THE LINE, AN AUTOMATED PUMP

DEPOSITS MEASURED AMOUNTS OF BATTER ONTO EACH GRID PLATE.

THE TOP GRID PLATES ENCASE THE BATTER.

THIS PRODUCTION LINE IS COMPUTERIZED,

WHICH ENSURES THE PLATES ARE FILLED QUICKLY

AND WITHOUT ANY SPILLS.

AS THEY MOVE TOWARDS THE OVEN, THE WAFFLE IRONS ROTATE,

ALLOWING THE BATTER TO REACH ALL THE CREVICES INSIDE.

THEY NOW MOVE THROUGH A LONG GAS OVEN.

IT TAKES ABOUT TWO MINUTES FOR THEM TO COOK.

THEY EMERGE FROM THE OVEN PIPING-HOT,

WHERE A MACHINE CALLED A PICKING DRUM

REMOVES THEM FROM THE IRONS.

AS THE PICKING DRUM REVOLVES, NEEDLES GRAB THE WAFFLES

AND PULL THEM OFF THE HOT GRID PLATES.

THE PICKING DRUM TRANSPORTS THE WAFFLES UP TO ANOTHER LEVEL.

THE NEEDLES RETRACT,

TRANSFERRING TO A SERIES OF CONVEYORS.

AT THE OTHER SIDE OF THE FACTORY,

THE WAFFLES ENTER A BLAST FREEZER.

THE TEMPERATURE INSIDE IS MINUS 19 DEGREES FAHRENHEIT.

FANS BLOW FRIGID AIR ONTO THE WAFFLES

AS THEY SPIRAL THROUGH THE FREEZER.

IT TAKES JUST 20 MINUTES

TO FREEZE AND PRESERVE THESE FRESHLY BAKED WAFFLES.

THE FROZEN WAFFLES NOW MERGE INTO LANES

TO BE SORTED FOR STACKING.

A KIND OF TRAP-DOOR SYSTEM RELEASES THEM THREE AT A TIME

TO GRIPPERS THAT MOVE THEM ONTO A CONVEYOR.

THE CONVEYOR LANE NARROWS,

WHICH FORCES THE WAFFLE STACKS INTO A SINGLE ROW.

A SENSOR-ACTIVATED GATE RELEASES THE STACKS

TWO AT A TIME TO THE PACKAGING STATION.

IT TAKES JUST A SECOND FOR THE TWO STACKS OF FROZEN WAFFLES

TO BE WRAPPED AND SEALED IN A TIGHT CELLOPHANE PACKAGE.

THEN IT'S INTO A METAL DETECTOR.

TO DEMONSTRATE HOW IT WORKS,

WE PLACE A QUARTER ON ONE OF THE PACKAGES.

THE SYSTEM SENSES IT IMMEDIATELY,

AND A BLOWER BLASTS THE PACKAGE OFF THE CONVEYOR.

SUCTIONING FINGERS NOW PICK UP THE OUTER PAPERBOARD BOX

AND OPEN IT AS THEY PLACE IT ON THE CONVEYOR.

A RAM THEN SHOVES THE WRAPPED WAFFLES INTO THE BOX.

INCREDIBLY, THEY CHURN OUT

MORE THAN 8,600 WAFFLES AN HOUR AT THIS FACTORY,

CATERING TO DIFFERENT TASTES AND DIETARY REQUIREMENTS,

AND THAT MERITS A TOAST.

Narrator: MUCH OF TODAY'S HIGH-TECH EQUIPMENT

REQUIRES SPECIALTY WIRES AND CABLES,

FROM STAGE LIGHTING TO MEDICAL DEVICES TO ROBOTICS.

WIRES AND CABLES HAVE TO BE CUSTOM DESIGNED

AND EXPERTLY MANUFACTURED TO PERFORM IN A SPECIFIC WAY

AND WITHSTAND VARIOUS ENVIRONMENTAL CONDITIONS.

CABLES CAN BE DESIGNED TO WITHSTAND HIGH TEMPERATURES

OR PERFORM SPECIAL FUNCTIONS

SUCH AS SENSING pH LEVELS OR PROXIMITY TO OBJECTS.

AT THE HEART OF A CABLE

ARE ELECTRICAL WIRES CALLED CONDUCTORS.

A CONDUCTOR BEGINS AS A BARE COPPER WIRE.

THIS EXTRUSION MACHINE COATS IT IN PLASTIC.

CHILLED WATER SOLIDIFIES THE PLASTIC AROUND THE WIRE

AS INSULATION.

THIS ISOLATES EACH WIRE FROM ITS NEIGHBORS.

EVERY CONDUCTOR PASSES THROUGH A MACHINE CALLED A SPARK TESTER.

IT RUNS CURRENT THROUGH THE CONDUCTOR

TO ENSURE THE INSULATION IS FLAWLESS.

IF THERE'S EVEN THE SMALLEST BREAK IN THE INSULATION,

THE MACHINE WILL SOUND THE ALARM AND LOCATE THE SPOT.

THE CONDUCTOR THEN ENTERS A MACHINE CALLED A CABLER.

IT UNROLLS SPOOLS OF INSULATED CONDUCTORS

AND UNITES THEM WITH OTHER COMPONENTS

TO FORM THE CABLE'S INNER WORKINGS.

AT THE CENTER OF THIS PARTICULAR CABLE

IS A TWISTED PAIR OF INSULATED CONDUCTORS.

AROUND THEM GO COLOR-COATED INSULATED CONDUCTORS

AND FILLERS TO FILL IN THE GAPS BETWEEN THE CONDUCTORS,

GIVING THE CABLE A SMOOTH, CYLINDRICAL SHAPE.

HERE THE FILLERS ARE STRANDS OF POLYPROPYLENE FOAM.

AN ORIENTATION PLATE ALIGNS THE COMPONENTS

IN THE PROPER CONFIGURATION

AS THEY ENTER THE CABLE-ASSEMBLY DIE.

THE COMPONENTS EXIT THE DIE

WITH THE FILLERS WOUND AROUND THE INSULATED CONDUCTORS,

WHICH WRAP AROUND THE CENTRAL WIRE.

THE NEXT MACHINE, CALLED A TAPING HEAD,

WRAPS BINDER TAPE AROUND THE CABLE.

THIS TAPE HOLDS EVERYTHING TIGHTLY IN POSITION

SO THAT THE ASSEMBLED COMPONENTS DON'T UNRAVEL.

THIS IS A DIFFERENT TYPE OF CABLE ASSEMBLY MACHINE.

LIKE BEFORE,

ALL THE INSULATED CONDUCTORS UNROLL FROM THEIR REELS

AND TRAVEL THROUGH THE HOLES OF AN ORIENTATION PLATE.

DIES DIVIDE THE SIX CONDUCTORS OF THIS CABLE

INTO THREE GROUPS OF TWO,

TWISTING THE CONDUCTORS OF EACH PAIR TOGETHER.

THE MACHINE THEN WRAPS EACH TWISTED PAIR

IN A SHIELD MADE OF ALUMINUM-COATED POLYESTER.

SHIELDING ELIMINATES WHAT'S KNOWN AS CROSS TALK --

SIGNALS INTERFERING WITH EACH OTHER.

THE NEXT DIE JOINS ADDITIONAL WIRES

THAT DON'T NEED TO BE SHIELDED TO THE SHIELDED ONES.

THEN EVERYTHING GETS TWISTED INTO ONE CABLE.

THEN A FINAL TWISTING, SEEN HERE IN SLOW MOTION.

THE ACTUAL SPEED IS 1,000 REVOLUTIONS PER MINUTE.

THE NEXT MACHINE WRAPS TISSUE PAPER AROUND THE CABLE.

THEN AN EXTRUDER APPLIES A JACKET

MADE OF A PLASTIC AND RUBBER COMPOUND.

THE TISSUE PAPER ACTS AS A SEPARATOR,

PREVENTING THE JACKET FROM STICKING TO THE CABLE INSIDE.

SOMETIMES, INSTEAD OF TISSUE PAPER,

THE CABLE RUNS THROUGH A BATH OF TALC.

TALC IS A MINERAL THAT ABSORBS HEAT,

SO JUST LIKE TISSUE PAPER,

IT PREVENTS THE JACKET FROM STICKING.

ONCE AGAIN, AS THE CABLE EXITS THE EXTRUDER,

CHILLED WATER SOLIDIFIES THE MOLTEN MATERIAL INTO A JACKET.

A WHEEL WITH RAISED LETTERING IMPRINTS THE MANUFACTURER'S NAME

AND TECHNICAL SPECIFICATIONS INTO THE JACKET.

CERTAIN JACKETED CABLES NEED A BRAIDED SHIELD

TO ELIMINATE ELECTRICAL INTERFERENCE.

THIS MACHINE HAS 48 CARRIER SPOOLS,

EACH OF WHICH HOLDS 10 WIRES MADE OF TIN-PLATED COPPER.

AS THEY JACKETED CABLE MOVES UPWARD THROUGH THE MACHINE,

THE SPOOLS MOVE IN A PROGRAMMED PATTERN,

WEAVING THE SHIELD AROUND THE CABLE.

FROM THERE, A LAST TRIP THROUGH THE EXTRUDER

FOR A FINAL THERMOPLASTIC JACKET...

AND THE CUSTOM-MADE CABLE

IS READY TO BE CONNECTED AND POWERED UP.

Narrator: TRAIN WHEELS ARE USED ON RAILCARS AROUND THE WORLD.

PASSENGER TRAINS RELY ON THEM TO TRANSPORT PEOPLE.

FREIGHT CARS DEPEND ON THEM FOR HAULING PRODUCTS.

AND THE LOCOMOTIVES THAT PULL THESE TRAINS AND FREIGHT CARS

COUNT ON THEM TO KEEP PEOPLE AND PRODUCTS MOVING SMOOTHLY.

THIS COMPANY HAS BEEN MAKING TRAIN WHEELS AND AXLES

FOR OVER 150 YEARS.

TO START, AN ELECTRIC FURNACE MELTS RECYCLED STEEL

AT ABOUT 2,900 DEGREES FAHRENHEIT.

A GIGANTIC BUCKET THEN TRANSFERS THE LIQUID METAL

INTO WHAT'S CALLED A MOLD PIT.

INSIDE THE PIT, THE METAL FILLS EIGHT HOLES FROM THE BOTTOM UP,

CREATING STEEL INGOTS 20-FEET-LONG.

A BAND SAW CUTS THE COOLED INGOTS

INTO SECTIONS CALLED WHEEL MOLTS.

EACH MOLT WEIGHS ABOUT 1,000 POUNDS.

TO PREPARE THE MOLTS FOR FORMING INTO TRAIN WHEELS,

AUTOMATED MACHINERY LOADS THEM

INTO ONE DOOR OF THIS ROTARY FURNACE...

AND THEY EXIT THE OTHER SIDE AT AROUND 2,400 DEGREES FAHRENHEIT.

A MACHINE THEN PLACES THE MOLTS

INTO A HIGH-PRESSURE WATER-DESCALING UNIT

THAT REMOVES THE OUTERMOST LAYER OF METAL.

A PRESS THEN SQUASHES EACH MOLT LIKE A MARSHMALLOW

WITH 9,000 TONS OF PRESSURE,

FORGING IT INTO THE ROUGH SHAPE OF A TRAIN WHEEL.

THE TRAIN WHEEL IS 30 INCHES IN DIAMETER

WHEN A ROBOT REMOVES IT FROM THE PRESS

AND DELIVERS IT TO A ROLLING MILL.

THE MILL SQUEEZES AND SHAPES THE WHEEL

UNTIL IT EXPANDS TO 36 INCHES IN DIAMETER, A 20% INCREASE.

THE TRAIN WHEEL THEN ENTERS A FINAL SHAPING PRESS

THAT PUNCHES OUT THE HOLE WHERE THE AXLE WILL GO.

ALL EXCESS MATERIAL GOES BACK TO THE MELT SHOP FOR RECYCLING.

AFTER HEAT TREATMENT,

A MACHINE SPRAYS THE OUTSIDE OF THE WHEEL WITH COLD WATER,

WHICH HARDENS THE STEEL.

NEXT, THEY MACHINE THE RIM OF THE WHEEL AND THE AXLE HOLE.

A WORKER THEN ENSURES THEY MEET ALL SPECIFICATIONS.

IDENTIFIED AND LABELED,

THE WHEELS ARE NOW READY FOR THE AXLES.

AXLES START OFF AS STEEL INGOTS

THAT A MANIPULATOR FEEDS INTO A ROTARY FORGING MACHINE.

THE MACHINE ROTATES AND HAMMERS THE PIECE,

GRADUALLY SHAPING THE HOT METAL INTO AN AXLE.

THE MANIPULATOR AND THE FORGING MACHINE WORK AS A TEAM,

ULTIMATELY SHAPING THE AXLE

TO THE REQUIRED DIAMETER AND LENGTH.

THE AXLES THEN GO THROUGH A HEAT-TREATING PROCESS.

NEXT, THEY MACHINE THE ENTIRE AXLE,

REMOVING ALL EXCESS MATERIAL,

AND PREPARE IT TO ACCEPT THE TRAIN WHEEL.

HERE, A WHEEL MOUNTING PRESS

FITS A WHEEL ONTO EACH END OF THE AXLE.

A WORKER LUBRICATES THE AXLE AND ATTACHES A BEARING.

HE THEN BOLTS ON THE END CAP

AND SECURES IT USING A TORQUE WRENCH.

A CRIMPER TOOL LOCKS THE BOLTS IN PLACE.

FINALLY, THE MOUNTED WHEEL SET ROLLS OFF THE ASSEMBLY LINE,

READY TO INSTALL UNDER A RAIL CAR.

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