Abstract: The present invention features a reciprocating wire saw particularly adapted or configured for cutting hard materials. In one aspect, the reciprocating wire saw comprises (a) a flexible wire; (b) a plurality of cutting segments fittable onto the flexible wire, wherein each of the cutting segments comprises an outer surface; and a (c) plurality of superabrasive particles braze bonded onto the outer surface of the cutting segments to form a cutting wire. In another aspect, the reciprocating wire saw comprises a plurality of superabrasive particles braze bonded directly to the wire itself to form a cutting wire. The cutting wire is unique in that it comprises a pre-determined superabrasive particle concentration and is configured to cut various materials, such as granite, in a reciprocating manner.

Abstract: A diamond-like carbon (DLC) coated golf club head primarily for reduction of friction between the hitting surface and the golf ball at impact. The DLC coating comes in two varieties including dehydrogenated DLC or hydrogenated DLC and is thinly applied between about 0.1 and 10 &mgr;m. The diamond particle size of individual diamond-like carbon molecules or crystals can be less than 0.1 &mgr;m, and preferably less than 1 nanometer. The DLC coating may be bonded to the golf club head or hitting surface using cathodic arc method or other applicable methods at temperatures of less than 200° C.