Ep 3. Swiss Army Knives, Player Piano Rolls, Oil Tankers and Racing Wheels

How It's Made season 7 episode 3 takes viewers on a journey through the production process of various everyday items. The episode showcases the production of Swiss Army knives, player piano rolls, oil tankers, and racing wheels.

The episode starts off with a look into the production process of Swiss Army knives. Viewers get an inside look at the different layers that go into the making of the iconic red handle, such as the plastic and aluminum layers. Each piece is meticulously crafted to ensure a perfect fit. The blades themselves are made from stainless steel and are sharpened to precision.

Next up, the episode goes into the production of player piano rolls. These were popular in the early 1900s and allowed people to play piano music without actually knowing how to play the instrument. The rolls work by using perforated paper with specific notes and timing, which would activate the corresponding notes when played on a piano. The production of these rolls involves the use of special machines that punch the holes in the paper at the correct intervals. Viewers get a closer look at the intricate process that goes into producing these rolls, from creating the paper to the final product.

The episode then takes a turn towards the production of oil tankers. These massive vessels are used to transport fuel around the world and can hold millions of barrels of oil. Viewers get a glimpse into the engineering and design behind these ships, which must withstand harsh ocean conditions and safely transport their cargo. The process involves using specialized materials, such as steel and fiberglass, to create a strong and durable structure. The tanks themselves are created using a hydraulic press, which shapes the metal into the necessary size and shape.

Lastly, the episode showcases the production of racing wheels. These are specialized wheels used by race cars that are designed to be lightweight and durable, allowing for maximum speed and performance. The production process involves using specialized materials, such as aluminum and carbon fiber, to create a lightweight and aerodynamic design. The wheels go through a rigorous testing process to ensure they can withstand the extreme conditions of a racetrack.

Overall, How It's Made season 7 episode 3 gives viewers a captivating look at the production process of everyday items. From the intricacies of a Swiss Army knife to the massive proportions of an oil tanker, viewers are taken on a behind-the-scenes journey to see how these items are made. It's a fascinating look into the world of manufacturing and engineering - one that will leave viewers with a newfound appreciation for the items they use every day.