Abstract: At 12:05 a.m. on February 26, 2020, an employee was operating a custom-built tapper machine used to cut threads into sintered metal parts made at the employer's sintered metal product manufacturing facility. The employee opened the door of tapper machine #10 and reached into the point of operation, where the tap cuts threads, to clear a part that had jammed. While attempting to clear the part, the employee manually cycled the machine controls, and the employee's fingertip became caught in the jaws of the tapper machine. The door of this machine was not equipped with a safety-rated interlock, and the employee did not lock out the machine prior to reaching into the point of operation. The employee sustained a fingertip avulsion and was hospitalized for treatment.