We're all familiar with the multi colored and sometimes intricate neon signs that you can see hanging outside of businesses everywher, but I sport there are some things you don't know about neon signs. For example, did you know that all neon signs aren't made with neon (since neon actually only shows up as red), Further, did you know that every neon sign is made by hand, one at a time? It may seem a bit hard to believe that there isn't a factory, or multitude of factories somewhere, but the manufacturing process just cannot be done by a machine.
The process of making a neon sign is as such. A worker heats a glass tube to a pliable state, then bends the tube into the shapes or letters that are desired as the tube is continuously heated over a flame. During this heating and bending process, air is blown into the tube to make sure it retains its hollow shape. Once the desired shape is attained, a vacuum pump sucks all the air out of the tube, and it is then filled with an inert gas. (the type of gas helps determine the color the tube will glow. As already stated, neon glows red).