Question

How 3D printer works?

Answer 1

The 3D printing process turns a whole object into thousands of tiny little slices, then makes it from the bottom-up, slice by slice. Those tiny layers stick together to form a solid object.

Answer 2

They use an inklike plastic that goes through a fine needle or dispenser that make the shape you want with a cierten code by the computer.this is a simple way of saying it.