Unlike 3D printing, CNC is subtractive rather then additive. The CNC system starts off with a larger block of material since the workpiece, and gets rid of regions, like chipping away at marble – to get to the final product. Linear, rotary and angle encoders can be used with servo https://cnc-machining-centers41852.verybigblog.com/31446223/5-essential-elements-for-professional-cnc-milling