What exactly is the difference between cnc machining and 3d printing, in layman's terms, 3d printing is a kind of additive technology and cnc machining is a kind of subtractive technology, in terms of material

Non-standard parts machining refers to the process of machining parts that are customised according to the specific needs of the customer. These parts usually have complex geometries, special material requirements or unique performance needs, so their machining process technology requirements are higher.