
Machines: How They Work
A look at how a treadmill, a turntable, and a bbq grill really work.

A look at how a treadmill, a turntable, and a bbq grill really work.

A look at how a 3-D printer, a cross trainer, and a kitchen mixer really work.

A look at how a grass trimmer, a sprinkler, and a movie lens really work.

A look at how a car jack, a movie projector, and a leatherman really work.

The extraordinary inner workings of a lawn mower, a pinball machine and a padlock.

A look at how an ATM, a vacuum cleaner, and a skateboard really work.

Discovering the inner workings of car winches; coffee machines; hiking boots.

A look at how a piano, a vending machine, and a rappel really work.

How a pool table, a gas-fired boiler, and a shopping cart work.

How a paintball gun, a floor scrubber, and an ice machine really work.

The extraordinary inner workings of a ticket barrier, a refrigerator and an electric guitar.

The extraordinary inner workings of a mechanical watch, a toilet and a yoyo.

The extraordinary inner workings of a safe, a tennis ball launcher and a music box.

The extraordinary inner workings of an escalator, a leaf blower and a tape measure.

The extraordinary inner workings of a carwash, a blender and a bicycle pump.

The extraordinary inner workings of a chainsaw, a jukebox and a fishing reel.

An airport made from water and ice; a fish factory churns out millions of pounds of seafood a day.

A barge carries an entire train; a flying ambulance saves lives at 14,000 feet.

Alaska's Coast Guard fights waters to maintain buoys; rewards below Alaska's surface.

Alaskan engineers build a massive dam to power an entire town; the world's largest helicopters.