does anyone know what the profession is called that involves designing and engineering guitars?

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Fender Standard Stratocaster
Maton ER90C

wiki: "The craft of making string instruments, or lutherie, is commonly divided into two main categories: makers of stringed instruments that are plucked or strummed and makers of stringed instruments that are bowed.[2] Since bowed instruments require a bow, the second category includes a subtype known as a bow maker or archetier."

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you can save the world with your guitar one love song at a time it's just better, more fun, easier with a fender solid body electric guitar or electric bass guitar.