Before revision:   The usability of the soft jig was evaluated from the viewpoint of the versatility and fixing performance for various shapes and postures of parts in assembly operations .
After revision:  We propose a method to configure parts-fixing on the soft jig based on contact relations, reachable directions, and the center of gravity of the parts that are fixed on the jig. The usability of the soft jig was evaluated from the viewpoint of the versatility and fixing performance for various shapes and postures of parts in assembly operations .