Original subtitles

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

CAPTIONS PAID FOR BY DISCOVERY COMMUNICATIONS

Narrator: FISHING REELS DATE BACK TO 12th-CENTURY CHINA.

IN THE BEGINNING, THEY WERE VERY BASIC DEVICES

USED ONLY FOR STORING EXTRA LINE.

BUT BY THE 1800s, CRAFTSMEN IN BRITAIN AND AMERICA

REINVENTED THE REEL WHEN THEY GAVE IT A DRAG SYSTEM

FOR LANDING FEISTY FISH.

THESE FLYCASTERS COULD HOOK THE BIG ONE AT ANY MOMENT,

AND THAT'S WHEN A PRECISION FISHING REEL WILL COME IN HANDY.

TO MAKE A FLY-FISHING REEL,

THEY START WITH A SOLID ALUMINUM PUCK.

THE PUCK TURNS ON A LATHE AS A COMPUTERIZED CUTTER

CONTOURS IT TO SHAPE IT INTO A SPOOL.

A DIFFERENT TOOL MACHINES A CENTER HOLE.

THE FOCUS THEN MOVES TO THE OTHER SIDE

AS ANOTHER TOOL COMPLETES THE SPOOL SHAPE.

THE DIMENSIONS MUST BE EXACT

IF THIS FISHING REEL IS TO PERFORM FLAWLESSLY.

THEY DRILL HOLES TO BOTH REDUCE THE WEIGHT OF THE SPOOL

AND PROVIDE SOME VENTILATION FOR WET FISHING LINE.

THEY CUT WINDOWS INTO THE OTHER SIDE

FOR AN ATTRACTIVE LOOK THAT FURTHER LIGHTENS THE REEL.

NEXT, ANOTHER ALUMINUM PUCK IS TRANSFORMED INTO A FRAME

FOR THE SPOOL AND OTHER PARTS.

THE FRAME GOES INTO A BATH OF SOAPY WATER AND PLASTIC PELLETS,

WHICH RUB THE PART CLEAN.

THE FINAL TOUCH IS A BLACK OXIDE FINISH.

THEY NOW TRANSFORM THIS ALUMINUM BAR INTO FEET,

WHICH WILL BE USED TO MOUNT THE REEL TO THE FISHING ROD.

A LASER ENGRAVES THE COMPANY NAME ONTO THESE ATTACHMENTS.

IT ALSO DOES A BIT OF CUSTOM ENGRAVING ON THE FRAME.

A WORKER NOW INSERTS A BRONZE BUSHING INTO THE CENTER

OF THE SPOOL AND USES HYDRAULIC FORCE TO ENTRENCH IT.

HE THEN POSITIONS A STAINLESS STEEL BALL

ON TOP OF THE BUSHING.

HE ACTIVATES A PRESS THAT DRIVES THE BALL THROUGH IT

TO EXPAND THE BUSHING TO THE CORRECT INTERNAL DIMENSION.

ANOTHER WORKER APPLIES A COUNTERWEIGHT

TO ONE SIDE OF THE SPOOL.

THIS BIT OF STAINLESS STEEL

WILL OFFSET THE WEIGHT OF THE SPOOL HANDLE.

SHE INSTALLS THE SPOOL'S MAGNETIC LOCKING MECHANISM.

THIS MOLDED POLYMER PART HAS A TINY MAGNET INSIDE.

SHE APPLIES A SECOND MAGNET TO IT,

FOLLOWED BY A RELEASE BUTTON.

ONE FINAL MAGNET AND AN ALUMINUM CAP,

AND THIS ASSEMBLY IS COMPLETE.

SHE NOW INSTALLS PART OF THE DRAG-ENGAGEMENT SYSTEM.

IT'S THIS SYSTEM THAT WILL CREATE THE NECESSARY RESISTANCE

ON THE FISHING LINE FOR BATTLING A BIG FISH.

SHE APPLIES ADHESIVE TO SCREWS

AND THEN USES THEM TO ATTACH THE FOOTING TO THE FLY-REEL FRAME,

USING A SCREWDRIVER TO SET IT TO A SPECIFIC TORQUE.

SHE THEN RESUMES THE ASSEMBLY OF THE DRAG SYSTEM

BY PLACING A RUBBER "O" RING IN THE FRAME'S CENTER GROOVE.

SHE INSTALLS THE THRUST-BEARING RING,

WHICH CAN BE ROTATED BY THE FLY-FISHER

TO ADJUST THE DRAG SETTING.

AND IT'S NOW TIME TO ATTACH THE SPOOL TO THE FISHING-REEL FRAME.

SHE TURNS IT TO CHECK THE DRAG SETTING

AND ADJUSTS IT TO ITS STARTING POINT.

SHE SECURES THE SETTING

BY INSERTING A PIN INTO THE BEARING.

THEN SHE REMOVES THE CENTER LOCKING SCREW TEMPORARILY

TO ASSEMBLE THE KNOB BASE TO THE THRUST BEARING.

SHE REINSTALLS THE SCREW

AND COVERS THE ASSEMBLY WITH THE DRAG KNOB.

SHE TURNS THE SPOOL FOR A FINAL INSPECTION,

CONFIRMING THAT THIS FISHING REEL OPERATES SMOOTHLY.

AND NOW IT'S READY TO PUT A POSITIVE SPIN

ON ANY FISHING EXPERIENCE.

Narrator: A FRESH COAT OF LATEX PAINT

IS A SUREFIRE WAY TO SPRUCE UP A HOME.

LATEX IS A TERM FOR ACRYLIC OR VINYL RESINS.

LATEX PAINT IS WATER-BASED,

SO IT HAS LESS ODOR THAN ALKALINE PAINT.

IT ALSO CLEANS UP WITHOUT ANY HARSH SOLVENTS.

ALL YOU NEED IS SOAP AND WATER.

THE PAINT FACTORY PRODUCES AN UNCOLORED BASE.

THE STORE THEN TINTS THAT BASE

TO THE COLOR ORDERED BY THE CUSTOMER.

LATEX PAINT CONTAINS WATER, LATEX FOR ADHESION,

TITANIUM DIOXIDE, CALCIUM CARBONATE,

POTASSIUM, ZINC FOR MILDEW RESISTANCE,

AND WHATEVER ADDITIVES

THE PARTICULAR TYPE OF PAINT REQUIRES.

FOR EXAMPLE, IF IT'S PAINT DESIGNED FOR METAL,

A RUST INHIBITOR.

THEY PUMP THE WATER INTO A LARGE MIXING TANK.

THEN THEY ADD A THICKENING AGENT AND STABILIZER

TO PREVENT THE INGREDIENTS

FROM SETTLING TO THE BOTTOM OF THE TANK

AND TO THE BOTTOM OF THE CAN ONCE THE PAINT IS PACKAGED.

A VACUUM DUCT SUCKS UP THE WASTE.

ONE AT A TIME,

ALL THE INGREDIENTS EXCEPT THE LATEX GO IN.

THERE'S A SPECIFIC MIXING TIME AFTER EACH INGREDIENT

BECAUSE PROPER BLENDING IS CRITICAL FOR QUALITY.

NOW THEY PUMP THE TANK'S CONTENTS

INTO ANOTHER MIXING TANK THAT CONTAINS THE LATEX.

AFTER FOUR TO SIX HOURS OF BLENDING,

THE INDUSTRIAL-SIZED BATCH OF PAINT BASE IS FINALLY READY.

THE FACTORY SUBJECTS A SAMPLE FROM EVERY BATCH

TO EXTENSIVE QUALITY-CONTROL TESTING.

THIS VISCOMETER MEASURES THE THICKNESS OF THE PAINT.

THIS TEST ASSESSES HOW WELL THE DRY INGREDIENTS

HAVE DISPERSED WITHIN THE MIX.

THIS TELLS THEM WHETHER THE MIX IS BLENDED WELL ENOUGH

TO MOVE INTO THE SECOND TANK CONTAINING THE LATEX.

TECHNICIANS ALSO CONDUCT COLOR TESTS,

ADDING RECIPES OF LIQUID COLORANTS TO A GALLON SAMPLE.

THIS IS TO ENSURE THE SHADE

COMES OUT EXACTLY THE WAY IT'S SUPPOSED TO.

TO CHECK IF THE PAINT COVERS WELL,

THEY BRUSH IT ONTO TEST PAPER.

THE STRIPES PROVIDE A CONTRAST

SO THAT ANY DEFECTS IN THE PAINT,

SUCH AS FOAM OR GRIT, WILL SHOW.

THIS TEST EVALUATES TINT STRENGTH.

ONCE THE PAINT SAMPLE DRIES,

THEY ANALYZE ITS COLOR PROPERTIES

WITH A MACHINE CALLED A SPECTROPHOTOMETER.

ONCE THE BATCH PASSES INSPECTION,

IT PROCEEDS TO PACKAGING.

LATEX PAINT CONTAINS ABOUT 60% WATER, WHICH CORRODES METAL,

SO THE STEEL CANS ARE LINED WITH AN ANTI-RUST COATING.

THE CANS RUN OVER A GLUE APPLICATOR,

THEN OVER A LABEL,

WHICH INSTANTLY STICKS TO THE ADHESIVE.

THE NEXT STOP IS A FILLING MACHINE.

EACH CAN SITS ON A SCALE

THAT'S POSITIONED UNDER A DISPENSING NOZZLE.

ONCE THE SCALE DETECTS THE CORRECT NET WEIGHT,

IT TRIGGERS THE NOZZLE TO STOP.

FROM THE FILLING MACHINE TO A LID DISPENSER

THAT DROPS A COVER ONTO EACH CAN.

THEN IT'S ON TO WHAT'S CALLED A LID PRESS.

AS EACH CAN PASSES UNDERNEATH,

A ROW OF CYLINDERS GRADUALLY PRESSES IN THE LID.

THE NEXT MACHINE, CALLED A BALER,

ATTACHES A CURVED HANDLE MADE OF STEEL WIRE.

IT LOCKS THE HANDLE ENDS

INTO METAL DISKS ON BOTH SIDES OF THE CAN.

THE FACTORY VARIES ITS FORMULATIONS

TO PRODUCE PAINT IN LUSTERS RANGING FROM FLAT TO HIGH GLOSS

AND FOR INTERIOR AND EXTERIOR USE,

MAKING SURE IT'S GOT EVERY POSSIBLE APPLICATION COVERED.

Narrator: LOOMS FOR HANDWEAVING CLOTH

HAVE BECOME INCREASINGLY SOPHISTICATED OVER TIME.

BUT THE BASIC CONCEPT STILL REMAINS THE SAME --

WEAVING HORIZONTAL THREADS, CALLED WEFT THREADS,

THROUGH VERTICAL THREADS, CALLED WARP THREADS,

TO CREATE THE PATTERNS IN THE CLOTH.

THE LOOM LIFTS SELECTED WARP THREADS.

THE WEAVER PASSES THE WEFT THREAD BETWEEN THE WARP THREADS,

THEN USES A BEATER TO PACK THE WEFT TIGHTLY.

THEY CONSTRUCT THE LOOM'S FRAME OUT OF ASH,

WHICH IS STRONG ENOUGH TO WITHSTAND THE PULLING

OF UP TO THOUSANDS OF THREADS.

WORKERS SUBMERGE THE FRAME PIECES IN MINERAL OIL

TO PREVENT THE WOOD FROM DRYING OUT.

THEY ASSEMBLE THE FRAME PIECES WITH HEAVY-DUTY NUTS AND BOLTS,

THEN MOUNT HIGH-STRENGTH PLASTIC BRACKETS

FOR ATTACHING THE VARIOUS COMPONENTS,

SUCH AS THE CLOTH BEAM

THAT GRABS AND MOVES THE FINISHED CLOTH.

THEY WRAP SANDPAPER AROUND THE BEAM'S ADHESIVE SURFACE

TO GRAB THE CLOTH WITHOUT DAMAGING IT.

ELSEWHERE, WORKERS MAKE THE LOOM'S CABLES

OUT OF HIGH-STRENGTH STAINLESS STEEL.

THESE CABLES MANEUVER HARNESSES THAT LIFT

AND LOWER THE WARP THREADS.

AFTER CUTTING EACH CABLE TO LENGTH,

SHE FORMS A LOOP THROUGH A CABLE CRIMP.

THEN SHE LOCKS THE LOOP WITH THIS HEAVY-DUTY CRIMPING TOOL.

ON ONE OF THE FRAME PIECES, THEY MOUNT A METAL PLATE

BEARING THE LOOM'S MODEL AND SERIAL NUMBERS.

THEY ASSEMBLE THE PULLEY SYSTEM ON WHICH THE HARNESS CABLES RUN.

THEY THREAD THE PLASTIC PULLEYS ONTO A STEEL AXLE

AND POSITION THE AXLE WITH STEEL DISKS CALLED STOP COLLARS.

A SPRING LEVER HELPS EACH HARNESS

LIFT ITS RESPECTIVE WARP THREAD.

AFTER HAMMERING A PIN INTO EACH LEVER,

THEY HOOK A WIRE TO THE PIN,

THEN SQUEEZE THE WIRE CLOSED SO THAT IT CAN'T UNHOOK.

THEY ATTACH A CHAIN TO AN EYELET ON ONE SIDE OF THE SPRING LEVER.

SHORTENING OR LENGTHENING THIS CHAIN

ADJUSTS THE TENSION OF THE HARNESS.

LIKE THE PULLEYS, THE SPRING LEVERS

GO ONTO AN AXLE ACROSS THE LOOM'S FRAME.

ANOTHER LOOM COMPONENT, CALLED THE WARP BEAM,

HAS HOLES WHICH HOLD METAL HOOPS THAT GUIDE THE WARP THREADS.

A BRAKE DRUM ON THE SIDE

PROVIDES COUNTERFORCE TO KEEP THE THREADS TAUT.

AT THE FRONT OF THE LOOM,

THEY INSTALL FOOT PEDALS CALLED TREADLES.

THE WEAVER USES THEM TO LIFT AND LOWER THE WARP THREADS.

NEXT COMES THE BEATER,

WHICH THE WEAVER USES TO PACK THE WEFT THREAD INTO THE FABRIC.

THE PULLEY SYSTEM FOR THE HARNESS CABLES GOES ON TOP.

THIS COMPUTER-CONTROLLED DEVICE, CALLED A DOBBY HEAD,

LIFTS AND LOWERS THE WARP THREADS

ACCORDING TO THE PROGRAMMED WEAVING PATTERN.

EACH HARNESS CABLE HOOKS ONTO THE DOBBY HEAD,

GOES AROUND ONE OF THE PULLEYS,

AND ATTACHES TO A HOOK ON THE HARNESS.

THE FACTORY CHECKS EVERY DOBBY HEAD ON A TEST LOOM

TO ENSURE THE DEVICE OUTPUTS THE PROGRAMMED PATTERNS CORRECTLY.

NEXT, WORKERS INSTALL THE SPRING LEVERS

THAT HELP THE HARNESS LIFT THE WARP THREADS.

EACH LEVER HOOKS ONTO A SPRING, WHICH ATTACHES TO A CHAIN,

WHICH CONNECTS TO A HARNESS.

THEY INSTALL THE WARP BEAM AT THE BACK OF THE LOOM.

THE WEAVER INSTALLS THE HOOPS AND WARP THREADS

ON THE WARP BEAM.

AS THE LOOM WEAVES,

THE CLOTH BEAM GENTLY MOVES THE EMERGING FABRIC FORWARD.

THE WEFT THREAD

IS WRAPPED AROUND A BOBBIN CALLED A SHUTTLE.

THIS PATTERN REQUIRES A TWO-WEFT-THREAD TECHNIQUE

THAT USES A SECOND SHUTTLE

SUSPENDED IN FRONT OF THE WEAVER.

THE LOOM KEEPS THE THREADS EVENLY TAUT,

PRODUCING A CONSISTENT AND UNIFORM WEAVE --

THE HALLMARKS OF A BEAUTIFUL, QUALITY CLOTH.

Narrator: UNTIL THE MID-19th CENTURY,

MOTHER NATURE WAS THE ONLY PRODUCER OF ICE,

AND THE IDEA OF MAN-MADE ICE SEEMED PREPOSTEROUS.

IT WAS A FLORIDA DOCTOR WHO,

IN NEED OF ICE TO COOL FEVERISH PATIENTS,

INVENTED THE ICE MACHINE.

THE TECHNOLOGY TOOK A FEW YEARS TO REFINE,

AND THEN THEY WERE READY TO CHILL.

TODAY'S COMMERCIAL ICE MAKERS CHURN OUT ICE ON DEMAND,

ALLOWING RESTAURANTS AND OTHER BUSINESSES

TO KEEP THINGS COOL AT ALL TIMES.

TO MAKE ONE, MACHINERY FOLDS THE EDGES OF STAINLESS-STEEL SHEETS

SO THEY CAN BE ASSEMBLED INTO THE ICEMAKER FRAME

AND EXTERIOR PANELS.

MEANWHILE, COPPER UNCOILS OVER A ROLLER,

WHICH REMOVES THE CURL FROM THE METAL.

A MACHINE SPIKED WITH BLADES THEN PUNCHES THE COPPER.

IN ONE ACTION, IT CUTS NUMEROUS SLITS IN THE STRIP

AND SLICES IT TO THE CORRECT LENGTH.

THE NOTCHED STRIPS ARE NOW READY TO BE ASSEMBLED INTO A GRID.

THIS GRID IS PART OF THE EVAPORATOR.

IT'S HERE THE LIQUID REFRIGERANT WILL EVAPORATE

AS IT PULLS HEAT FROM THE WATER TO FREEZE IT INTO ICE CUBES.

THIS COPPER TUBING IS CENTRAL TO THAT PROCESS.

AN AUTOMATED ARM BENDS IT

INTO A CONFIGURATION CALLED THE SERPENTINE,

PRODUCING A COIL THAT WILL FIT ON THE BACK WITH THE EVAPORATOR.

AS LIQUID REFRIGERANT MOVES THROUGH IT,

IT WILL DRAW HEAT OUT OF THE WATER.

THIS MACHINE FLATTENS THE TUBING,

GIVING IT GREATER SURFACE CONTACT WITH THE EVAPORATOR

TO FACILITATE HEAT TRANSFER.

THEN IT'S INTO A BIG WASHING MACHINE

TO REMOVE ANY OILS OR OXIDES ON THE PARTS.

A WORKER NOW APPLIES STRIPS OF TIN SILVER SOLDER

TO THE EVAPORATOR'S BACK PLATE.

THIS ACID SOLUTION WILL ACT AS A BONDING AGENT.

HE THEN PLACES THE EVAPORATOR, SOLDER SIDE DOWN,

ON THE SERPENTINE TUBING AND LOCKS THE ASSEMBLED PARTS

IN AN IRON RIG.

HE HOISTS THE RIG INTO AN OVEN TO MELT THE SOLDER STRIPS

BETWEEN THE BACK PLATE AND TUBING,

FUSING THE PARTS TOGETHER.

THEN IT'S INTO AN ULTRASONIC BATH,

WHERE HIGH-FREQUENCY SOUND WAVES

CLEAN OFF LINGERING CONTAMINANTS.

AN INSPECTOR NOW EXAMINES THE EVAPORATOR

TO CONFIRM THAT THE PARTS HAVE BEEN SOLIDLY FUSED.

NEXT, HE INSTALLS PIPES ON AN ICEMAKER'S SIDE PANEL.

THESE ARE THE LINES THAT SUPPLY REFRIGERANT TO THE MACHINE.

HE TURNS THE ASSEMBLY AROUND AND REMOVES THE CAPS

ON THE COMPRESSOR TO CONNECT IT TO A NETWORK OF PIPES.

THE COMPRESSOR WILL FORCE REFRIGERANT THROUGH THESE PIPES

IN A CONTINUOUS CYCLE OF HEATING AND COOLING

TO EVENTUALLY PRODUCE ICE.

HE BRAZES THE JOINTS TO SEAL THE CONNECTIONS.

HE ATTACHES A FAN TO ANOTHER SIDE PANEL.

IT WILL BLOW COOL AIR ONTO THE RADIATOR TO COOL THE REFRIGERANT

AND HELP CONVERT IT BACK INTO A LIQUID.

NOW HE PUMPS THE REFRIGERANT INTO THE SYSTEM AND MEASURES

THE FLOW TO ENSURE IT RECEIVES A PRECISE AMOUNT.

MEANWHILE, AT ANOTHER STATION, THEY ASSEMBLE THE ICE BIN.

IT'S TIME TO TEST THIS ICEMAKER.

WATER FLOWS CONTINUOUSLY

OVER THE SURFACE OF THE EVAPORATOR GRID

AS THE TEMPERATURE INSIDE THE CELLS DROPS BELOW FREEZING.

IMPURITIES, LIKE MINERALS, ARE WASHED AWAY

AS THE WATER TURNS TO ICE,

AND THE RESULT IS CRYSTAL-CLEAR CUBES,

ALMOST 6 1/2 POUNDS IN JUST 15 MINUTES.

FINALLY, THEY INSTALL THE FRONT PANEL ON THE UNIT.

THIS JOB IS DONE,

AND IT'S TIME FOR A LITTLE LIQUID REFRESHMENT...

ON ICE, OF COURSE.

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