Today 3D printing makes a lot of thing possible. Now that multi-toolhead printers are coming, some already available, it's possible to make composite parts. Like hard frame in soft wrapper, conductive lines (resistance still high), etc. I'm still learning, but it's exiting.

As for CNC, some cheap tabletop are available. FreeCAD is useful for design and g-code generation. The problem with cheap they are imprecise and shaky. I'm thinking about using 3d printed frame with metal everything else. Should be light enough to lift with one hand. For precision it'll need calibration from time to time as plastic moves. The goal is to have 3 axis mini CNC mill able to cut soft metals with precision better than 0.1mm.