For industry, or even businesses, a CNC will turn out usable parts quickly with minimum waste, however it's far from hand crafting.
Only the guy who programs the machine has a clue, and only the designer understands the whys.
The title is "Learning how to build an electric guitar" and that's what you've done and continue doing.
You're also learning how to do it faster, and how to more quickly get exactly what you want from the different materials.
So unless you cut a deal supplying a new guitar with each new Nissan, you're doing great the way you're going.
Rock on!
