Abstract: A firearm projectile includes a plurality of holes spaced equidistant from each other, where each hole extends from an upper part to a lower part of the firearm projectile, and where each hole extends at an acute angle from a y-axis longitudinal centerline of the firearm projectile, in both z and x axes directions, causing an accelerated rotation of the firearm projectile upon firing and an expansion of the firearm projectile upon impact that causes sections of the firearm projectile to separate.

Abstract: An electrical discharge machining system for machining a workpiece. The system comprises a wire guide support for positioning and guiding a wire electrode into a desired position relative to the workpiece and a source of a liquid dielectric fluid. The supply also provides means for directing the dielectric fluid from the source to a machining site between the electrode and the workpiece, and for atomizing the dielectric fluid in the machining site.

Abstract: An electrical discharge machining system for machining a workpiece. The system comprises a wire guide support for positioning and guiding a wire electrode into a desired position relative to the workpiece and a source of a liquid dielectric fluid. The supply also provides means for directing the dielectric fluid from the source to a machining site between the electrode and the workpiece, and for atomizing the dielectric fluid in the machining site.

Abstract: A micro EDM servo-head is disclosed which includes a servo, a lead screw, a carriage block engaging the lead screw, a support block, a contact block secured to the carriage block, and an electrode guide system coupled to the support block for controlling the position of the electrode of an EDM apparatus to which the micro EDM servo head is attached. The electrode guide system includes an electrode guide bottom having a longitudinal groove, and a floating guide cover which is biased toward the electrode guide bottom such that the electrode is forced into the groove and the position is controlled by forcing the electrode into the groove.

Abstract: An electric discharge machine side bore head used for machining in a generally transverse direction within a cavity formed in a workpiece. The head retaining an electrode having a primary axis oriented generally perpendicular to the surface which is to be machined. The side bore head includes an electrode holder, an electric contact providing electric current to the electrode holder, and a device for releasably retaining the electrode near one end of the electrode holder. The primary axis of the electrode is oriented generally perpendicular to a longitudinal axis of the electrode holder.

Abstract: A wire guide for a servo driven wire electrode in an electrical discharge machine (EDM) has inserts defining a precision guide slot for the electrode. The inserts are coated with a low friction coating to smooth the servo drive of the wire electrode through the wire guide so as to improve spark gap erosion produced between a tip portion of the electrode and a workpiece.

Abstract: A wire guide directs a wire electrode from a refeed mechanism in an electrical discharge machine EDM to a workpiece. The wire guide has ceramic inserts defining a precision guide slot for the electrode and wherein one of the inserts is carried by a deflectable member spring biased to damp the electrode so as to maintain concentricity of holes formed by the electrode and thereby closely control the hole diameter.