Jorad, see the little whorls on the back? On mine, under bright light, on the front, I can also see small whorls inside the recessed design. These were surely the work of a
CNC machine. This is a milling machine that is automated. If you're not familiar with it, you know how a drill press can go up and down? Imagine a grinding stone in it, and being able to move it sideways as well as up/down. A milling machine is basically just that, it's mostly freehand, and everything is a one-of-a-kind creation. With CNC (computer numeric control), all the moves are stored, then you just "play it back". You might need to stop to change to a different sized tool for differing places, or the CNC might have multiple tools that it can switch to by itself.
Evolv (or their machine
shop) probably just clamps a block of aluminum into it, hits "Go", and the end result is half of a Darwin. They might need to flip each half to do the other side.
The first one I ever saw used punched paper tape to store the 'program', then later on computer media. A co-worker of mine has one at home, it is an amazing thing. Wish I had one!
In the case of solid-body electric guitars (as well as thousands of other things), CNC was a godsend. It made possible very precise and standardized cutting possible, and without the constant attention of a craftsman doing it all by hand. There are hobbyist CNC guys, they swap programs all the time. "I'll trade you my program to cut out an
electric guitar body for your model helicopter wheel program.