I used a triangle-shaped NT dresser purchased at home center 10 years ago. Since the polishing surface is small and polished with a handle, it was a structure that does not enter the force. The NT dresser purchased this time has a large polished surface and the handles are gassifying, making it ideal for polishing as a woodwork file. Since it can be polished either in the front or back direction, I wanted the handles to be made back and forth. ★ One minus.