Systems and methods for attaching or joining a personalization accessory to headphones, earphones, ear buds and listening devices that produce, enhance and/or cancel acoustics and go in, on, and/or over the ear.

A length of a coating on an optical fiber is cut and stripped from an end of the fiber by supporting the fiber in confronting relation to a cutting edge on one or more blades. Each blade is positioned so that its cutting edge cuts into the coating without delaminating the coating from an underlying fiber cladding by providing the cutting edge with sufficient sharpness. The coating is sliced around the circumference of the fiber by either rotating the fiber about its axis so that the cutting edge of each blade slices the coating around a corresponding portion of the circumference of the fiber, or rotating the cutting edge of each blade about the fiber axis so that the cutting edge slices the coating around a corresponding portion of the circumference of the fiber. A cut length of the coating is then removed from the end of the fiber.

A method for expanding a rectangular section ring to form a non-rectangular section ring. The method includes heating a rectangular section ring of an alloy to a temperature of between 1000 and 1020 C., preheating an expanding block to a temperature of between 260 and 320 C., nesting the inner circumferential surface of the rectangular section ring on the outer circumferential surface of the expanding block; enabling the expanding block to press the inner circumferential surface of the ring in the radial direction, expanding the inner and outer diameter of the rectangular section ring and decreasing the wall thickness thereof for deforming the rectangular section ring to yield a profiled ring billet, whereby finishing a first expanding; rotating the profiled ring billet for 45 along the central axis, whereby finishing a first rotation; and repeating the expanding process and the rotation to obtain a non-rectangular section ring.

A dispense tip for low-volume dispensing is formed according to a process. The process comprises forming a hole through a length of a neck formed of a body of material; forming an inlet hole at a distal end of the hole, the inlet hole having a first inner diameter; forming an outlet hole at a distal end of the inlet hole, the outlet hole having a second inner diameter less than the first inner diameter, a first inner taper transitioning the inlet hole from the first inner diameter to the second inner diameter; forming an outer taper having a width that decreases along a longitudinal axis of the length of the hole in a direction of a distalmost end of the outlet hole; and reducing a width of an opening at the distalmost end of the outlet hole to a third inner diameter that is less than the second inner diameter.

A dispense tip for low-volume dispensing is formed according to a process. The process comprises forming a hole through a length of a neck formed of a body of material; forming an inlet hole at a distal end of the hole, the inlet hole having a first inner diameter; forming an outlet hole at a distal end of the inlet hole, the outlet hole having a second inner diameter less than the first inner diameter, a first inner taper transitioning the inlet hole from the first inner diameter to the second inner diameter; forming an outer taper having a width that decreases along a longitudinal axis of the length of the hole in a direction of a distalmost end of the outlet hole; and reducing a width of an opening at the distalmost end of the outlet hole to a third inner diameter that is less than the second inner diameter.