Ep 19. Escalator Handrails, Highlighters, Guitar Strings, Wigs

How It's Made season 3 episode 19 takes a closer look at the manufacturing processes behind the production of four unusual and diverse everyday items, ranging from escalator handrails to guitar strings, highlighters, and wigs.

The episode delves into the detailed process of how an escalator handrail is made. The manufacturing process starts with raw materials selected for their durability and ability to withstand heavy foot traffic. Robotic machines heat up the handrail's polyurethane material and mold it into the desired shape.

Next, the episode shifts its focus to the production of highlighters. It is revealed that highlighters' ink is made up of a mixture of water, fluorescent dye, and resin, which is then transferred from storage tanks to the production lines. Workers ensure the product's quality by testing each highlighter's ink and then packaging them.

The episode then explores the production of guitar strings, starting with the raw materials, which are then twisted into a solid core wire to produce the perfect tension. Extreme precision is required to create the standard size and gauge of guitar strings, which are checked for consistency through automated machines. The final product is coated with a protective layer, ready for the instrument enthusiast.

Finally, the episode takes a look at the production of wigs. Human hair is collected, treated, sorted, and cleaned for the wig production process. The hair is processed using natural materials to prevent damage and to increase resilience. Industrial workers create the wig's cap and prepare it for the attachment of the processed and styled hair. Professional stylists then cut, style and shape the hair into a finished wig ready for the consumer market.

Overall, this episode offers a fascinating insight into the manufacturing process of diverse items that are often overlooked in everyday life. It explores the meticulous attention to detail measure required in each production line and reveals the behind-the-scenes efforts that go into making everyday household items that we often take for granted.