Manufacturing method for high precision mold

A method of manufacturing a multi-fiber connector sleeve, comprising the steps of:

• a) providing a plastic body having upper and lower surfaces, and placing the lower surface of the plastic body on a conductor substrate;
• b) forming a plurality of perforating apertures in the plastic body using X-ray deep etching technology, each of the perforating apertures extending from an opening formed on the upper surface to the lower surface;
• c) rounding edges of the openings of the perforating apertures of the plastic body using ultraviolet (UV) lithography;
• d) electroforming a high precision mold using the plastic body as a model;
• e) molding a fiber aligning element using the high precision mold;
• f) molding a fiber sleeve body;
• and
• g) combining said fiber aligning element with said fiber sleeve body using ultrasonic waves to form said multi-fiber connector sleeve.