Ep 21. Fire Extinguishers, Doughnuts, Shock Absorbers, Banjos

In season 5 episode 21 of How It's Made, viewers get a behind-the-scenes look at the manufacturing processes behind fire extinguishers, doughnuts, shock absorbers, and banjos.

The episode starts off by showcasing how fire extinguishers are made. The first step involves the assembly of the cylinder, which is made from high-quality steel. After assembly, the cylinder is powder-coated and painted in the standard fire extinguisher colors - red for dry chemical extinguishers and silver or stainless steel for CO2 extinguishers. Once the cylinder is painted, it goes through a rigorous testing process to ensure that it can withstand high-pressure situations.

Following the fire extinguisher segment, the show transitions into the world of doughnuts. Viewers get an up-close look at the entire process, from mixing the dough to adding the glaze. The dough is mixed in large industrial mixers and then rolled out and cut into doughnut shapes. From there, the doughnuts are submerged in boiling oil until golden brown. Finally, the doughnuts are glazed before being sent off for packaging and distribution.

Next, viewers get a glimpse into the production of shock absorbers. These crucial car parts are made from a variety of different materials, including steel and rubber. The process starts with a large metal ring, which is fitted with brackets and then filled with hydraulic fluid. A piston is then inserted into the ring, and the entire assembly is welded together. Finally, the shock absorbers are tested to ensure they can withstand rapid changes in motion.

The final segment focuses on banjos, a classic instrument that's been around for hundreds of years. Banjos are made from a variety of materials, including wood, aluminum, and synthetic materials. The show follows the production of a high-end banjo, starting with the wooden neck and body. The metal components are then added, including the strings, tuners, and bridge. Finally, the show's experts demonstrate how to play a banjo, showcasing the beautiful sound that these instruments can produce.

Overall, season 5 episode 21 of How It's Made offers a fascinating look at the production processes behind four completely different products. Viewers get an exclusive, behind-the-scenes look at the hard work and dedication that goes into creating everything from fire extinguishers to banjos.