For developing design tools that everyone can understand and use easily, the application of interaction techniques such as sketch interface and augmented reality (AR) has attracted attention in recent years. In this paper, we propose a method for generating 3D models through intuitive manipulations of primitives in AR space. This method has the following features. (1)In order to make efficient processing, vertex based data structure is used for storing shape data of objects. (2)The main modeling functions consists of geometric set operations and local deformations for primitive shapes. (3)Since historical data is managed in the process of creating 3D objects, undo/redo operations can be performed efficiently. Based on the user questionnaire after creating a simple object, the performance of the proposed system is evaluated. Illustrative examples are also shown
