Why do you want to replace it, I think the two key points are different, each has its own advantages and can be used to achieve win-win! The advantage of the 3D printer is the technology of adding material manufacturing, which can directly transform the 3D model into entity and realize rapid prototyping, which can shorten the time of research and development and reduce the cost of research and development. 3D printer disadvantage - printing materials, time constraints, not suitable for mass production. The advantages of machine tools are high machining accuracy and strong product applicability. The disadvantage of machine tools is reducing material manufacturing technology, which has high cost in the early stage.