I'm sorry, what does CNC stand for?
Computer numerical control. Basically its a big, expensive machine you can input dimensions into and it will cut things (in this case acrylic) in specific designs. I have a friend who does custom acrylic display cases, I approached him about making me a custom case. I wanted one of the Pyramid PC cases that look kinda cool, he told me they were a bit complicated for the type of work he does (mostly by hand) and he recommended I got a CNC shop to have it done.
BTW: Computers building computers.. Kinda creepy innut? I think I've seen more than one dystopian movie that started out that way.
I wanted something like this, while it may happen one day, I've shelved the idea for now: