Attribute in Formation on Three-Dimensional Annotated Models

3D CAD is a tool for designers to transform ideas into a shape and examine and finalize such ideas. If techniques related to 3D CAD are effectively used, time and confusion can be reduced and an effective tool for representing design information can be established. Therefore, to establish a new concept of drawings, we should examine the effective use of 3D annotated models. In this paper, (1) fundamental knowledge of machinery is generally examined to design machines using 3D CAD. (2) Improvement in the skills of machine designers is also examined by considering the shape modeling technique using 3D CAD (design = shape determination = ambiguity reduction and shape contriving). (3) The significance of 3D annotated models and the training method for beginners in mechanical design are explained. (4) The actual design process is examined and analyzed, and an example of a practical training method is introduced. To effectively utilize 3D CAD, users must understand its characteristics and fully utilize its functions. Satisfactory learning effects were obtained through design training using 3D annotated models for beginners in mechanical design, who received courses on fundamental knowledge of mechanical design and performed practical design assignments (geometric dimensioning and tolerancing) simultaneously.