We can cut parts and assemble them into 3D structures.
Examples of complex structures built out of 2D materials:
What can it cut: Metals, Naturals, Composites, Plastic and Rubbers.
Speed (0-100%), Power (0-100%), Frequency (10 and 5000 pulses per inch, higher = hotter)
CO2 (10micron), Nd:YAG (1micron), Fiber Lasers (1micron)
https://en.wikipedia.org/wiki/Laser_cutting