Abstract: To treat a corner of an etched metal machined article by a method other than polishing. A method includes: forming a protective layer 200 on each of a front surface 120 and a back surface 140 of a metal plate 100 while a side surface 160 of the metal plate 100 is exposed; cutting out a precursor 300 of a component to be manufactured from the metal plate 100 on which the protective layer 200 is formed; etching the precursor 300 without removing the protective layer 200; chamfering a corner between the front surface 120 and the side surface 160 and a corner between the back surface 140 and the side surface 160 of the etched precursor 300 by an electrical or chemical treatment; and removing the protective layer 200 from the chamfered precursor 300.

Abstract: To guarantee positioning of an elastic pin during manufacturing without using a guide member, and to prevent contamination from a guide member in a final product. An electronic device inspection socket having a plurality of elastic pins each having the center portion embedded in, and having respective ends projecting from, an insulator which changes, through solidification, from a fluid state to a solid but deformable state, wherein the leading ends of the elastic pins are portions received by a plurality of recesses provided to a device for manufacturing the electronic device inspection socket, and the insulator is a portion formed after being injected in a fluid state between said respective ends in a state where said respective ends are received in the recesses and being solidified.

Abstract: To provide a flexible conductive base member and a multilayer conductive base member including the same, having no problem of failing to function as a contact and causing a variation in height between contacts. There are a covered region 10 covered with a noble metal and a non-covered region 20 not circumferentially covered with a noble metal on a surface of a reticulated fibrous body 50. The covered region 10 is located at an intersection 7 of fibers 5 of the reticulated fibrous body 50, and the intersections 7 are connected to each other. The non-covered region 20 is located between the intersections 7 of the fibers 5 of the reticulated fibrous body 50.