In the product development, the 3D printer has great advantage in rapid making of prototypes of industrial products, and in evaluating shape image of products quickly. In this paper, we explain about how to use the 3D printers in our education, and what is the problem in our education. We argue about the unification and differentiation of 3D printers with conventional working process. Furthermore, we consider how to use the 3D printers which is diversified in its performance and price. As the conclusion of this paper, it is clarified that excessive strength or excessive preciseness of work products may not be required for 3D printers in educational use, and that usage of 3D printers in educational scene may be limited to learn the basic of mechanical engineering.
