Servo track writer having a servo writer positioning arm with a vibration damper and a method of making a head disk assembly

A method of making a head disk assembly using a servo track writer, the head disk assembly including an enclosure having an opening and a base, an actuator arm coupled to the base and having a servo writer positioning arm facing surface, a disk coupled to the base and having a recording surface, the servo track writer including a platform for coupling to the head disk assembly, a servo writer positioning arm coupled to the platform, the positioning arm including a main body, a tip having an actuator arm facing surface, and a vibration damper positioned between the main body and the tip, the method comprising the steps of:

• providing the positioning arm through the opening;
• rotating the disk;
• and
• while the disk is rotating:
• positioning the actuator arm over the recording surface;
• biasing the actuator arm against the tip such that the positioning arm facing surface abuts the arm facing surface;
• and
• while the actuator arm is biased against the tip:
• damping vibrations induced in the actuator arm by way of the vibration damper dissipating energy transferred between the platform and the actuator arm.