A cutting device has a body, a driving device, a moving base, a head and a cutting rod. The driving device is mounted on the body to actuate the moving base to move relative to the body. The head extends from the body and has a central hole defined through the head. A notch and an exhaust hole are defined in the bottom of the head and communicate with the central hole. The cutting rod is moveably received in the central hole in the head and is attached to the moving base. The cutting rod has a cutting recess defined around the cutting rod. Accordingly, the metal waste generated during the cutting process is kept from flying about and injuring the user, so the safety of using the cutting device is improved. In addition, the cut metal sheet can be kept from shake or vibration.
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