Pepakura Designer is a program developed in Japan (the word Pepakura stands for papercraft in Japanese) for making unfolded 2D patterns from the 3D models. Because the operation is very simple, you can make patterns easily. Then you can edit the pattern as you like. Pepakura Designer makes it easy to design original papercraft patterns by importing 3D model data. No special knowledge is required for making papercraft patterns. All you have to do is prepare the 3D model. You may use some 3DCG software released from other developers to make the 3D models for unfolding.