Compared with 3D printing, CNC is subtractive instead of additive. The CNC method starts with a larger block of material since the workpiece, and removes locations, like chipping away at marble – for getting to the final model. Linear, rotary and angle encoders can be employed with servo motors together https://www.sedlacek-t.cz/obrabeci-centrum-haas-ec-400-spolehlivost-a-presnost-pro-vas-provoz/