3D Printing vs CNC: Explained. CNC milling machines take a block of solid material (e.g. aluminum or wood) and use sharp rotating tools or cutters to remove all parts that are not needed. So: Milling is a subtractive method â€“ in contrast to additive manufacturing as in 3D printing. CNC mills are computer-controlled.
CNC milling technology has existed ever since MIT introduced it in the 1950s. CNC routing is essentially the reverse of 3D printing. Instead of using a computer
3D printing is easier to start and has less limitations from produced shape. This guy claims that he gets 0.002mm precision (compared to 0.1mm on 3D printer).. . The CNC machine basically scales up the work: larger objects and higher .