In this work, we propose a 3D space handwriting recognition system by combining 2D space handwriting models and 3D space ligature models based on that the most different parts between 2D space handwriting characters and 3D space handwriting characters are the shapes of ligatures. We design the ligature model not dependent on each character but dependent on the incoming and the outgoing vector. Therefore with a few ligature models, various ligature shapes are modeled. Using 2D space handwriting models, we could use many models for various writing styles without training.