Utilization of the rootstock cutting device and the scion cutting device was discussed to save the cleft grafting work. Practical cutting devices were developed on the basis of the prototypes reported previously. For the easy replacement of the cutting blades, the blades were assembled on a plastic base. The blades could be replaced with the plastic base more easily and safely compared with the prototypes. The developed practical devices have the cutting accuracy and operation efficiency equivalent to the prototypes. Time required to cut one rootstock was about 60% and time required to cut one scion was about 40% of the manual operation. As the result of the durability investigation, it was found clear that cutting edges can cut 2000 seedlings.