ABSTRACT -- Shape Library and Part Generator are convenient functions for users in today's CNC Cutting Machine. By using these functions, user need not to program every line of G-Code command. Just only input shape parameters. This paper presents one Object-Oriented design of the Program Shape Library for using in Computer Numerical Control (CNC) cutting machine such as Plasma cutting machine. The method uses Booch diagram for presenting the Program structure of Shape Library and Part Generator. In the diagram Object-Oriented methods such as Inheritance, Encapsulate and Class relation can be show explicitly. As the result, We implemented the prototype Program Shape Library for Plasma Cutting machine. Which is based on Object-Oriented design method and an example is shown.

KEYWORDS -- Computer Graphic, Object-Oriented Design, Booch Modeling, Shape Library, Plasma Cutting Machine