A vane cluster for a gas turbine engine includes an outer diameter platform and an inner diameter platform. A plurality of vanes span from the outer diameter platform to the inner diameter platform. At least one inbound region is defined between a first vane of the plurality of vanes and a second vane of the plurality of vanes. The first vane includes a suction side facing the inbound region. Each of the vanes includes a leading edge core passage and a trailing edge core passage. A plurality of electrical discharge machined (EDM) holes are disposed within at least 0.500 inches (12.7 mm) of a leading edge of the first vane. Each of the EDM holes connect a leading edge core passage of the vane to an exterior surface of the vane.

A method of structuring and/or thinning a semiconductor wafer having a plurality of functional chip sites includes forming one or more semiconductor devices in a device region of each functional chip site at a frontside of the semiconductor wafer, and forming an electrode at one of the frontside or a backside of the semiconductor wafer. The side of the semiconductor wafer at which the electrode is formed is structured by applying voltage pulses between the electrode and a tool electrode positioned above the semiconductor wafer as part of an electrical discharge machining (EDM) process before the electrode is removed by the EDM process, and between the tool electrode and an intrinsic conductive layer formed on the side of the semiconductor wafer being structured after the electrode is removed by the EDM process.

A surgical stapler includes a first stapler half a second stapler half configured to releasably couple together. The second stapler half includes a first elongate member, a second elongate member, and a polymeric body that encapsulates at least a portion of each of the first elongate member and the second elongate member. One of the first stapler half or the second stapler half includes a distal portion configured to receive a staple cartridge, and the other of the first stapler half or the second stapler half includes a distal portion having a plurality of staple-forming pockets.

A cable includes: a linear conductor; a plurality of resin hollow tubes which are disposed around the conductor so that an air layer is formed around the conductor and which extend in a longitudinal direction of the conductor; an insulating protective member configured to protect the conductor and the plurality of hollow tube; and a partitioning portion provided in at least one hollow tube among the plurality of hollow tubes, the partitioning portion being configured to partition an interior of the hollow tube.

An electrical discharge machine is disclosed having a concentration detection function for a rust inhibitor containing an organic compound uses coloring of a metal complex produced through the reaction of the rust inhibitor with a color reagent to enable a detector to detect the change of characteristics involved in the change of the color of the metal complex. A predetermined amount of working fluid is sampled in a sampling cell at regular time intervals, a predetermined amount of color reagent is added to the working fluid, and the change of the color of the working fluid is detected by the detector.

A method for producing a plate-fin heat exchanger core includes the steps of stacking a bottom end sheet, multiple alternately stacked individual hot and cold layers, and a top end sheet, each of the individual hot and cold layers including a fin element forming multiple parallel open-ended fluid channels, a parting sheet separating the various individual layers, and two closure bars positioned on opposite sides of the fin element, parallel to the open-ended channels and extending a length of the open-ended channels, brazing the bottom end sheet, the various layers, and the top end sheet in a brazing furnace; and removing material from each of the exterior faces by precision machining, thereby removing material from each closure bar outer face. The precision machining can include electrical discharge machining, laser cutting, band sawing, drilling, boring, hogging, acid etching, and ion milling, in any combination.

A method for producing a plate-fin heat exchanger core includes the steps of stacking a bottom end sheet, multiple alternately stacked individual hot and cold layers, and a top end sheet, each of the individual hot and cold layers including a fin element forming multiple parallel open-ended fluid channels, a parting sheet separating the various individual layers, and two closure bars positioned on opposite sides of the fin element, parallel to the open-ended channels and extending a length of the open-ended channels, brazing the bottom end sheet, the various layers, and the top end sheet in a brazing furnace; and removing material from each of the exterior faces by precision machining, thereby removing material from each closure bar outer face. The precision machining can include electrical discharge machining, laser cutting, band sawing, drilling, boring, hogging, acid etching, and ion milling, in any combination.

A fixing device (1) for fixing workpieces, to fix substantially rod-shaped workpieces and workpieces to be machined by wire erosion or lasing, including a support apparatus (20) with a plurality of shaped elements (21) for accommodating and supporting a plurality of workpieces in the correspondingly formed shaped elements (21), and for positioning and fixing the workpieces in at least one translatory degree of freedom (22) in the shaped elements (21), wherein the fixing device (1) has a clamping apparatus (50) by means of which pressure force (52) can be applied to a plurality of workpieces accommodated in the shaped elements (21) so that the workpieces are fixed in the clamping apparatus (50) at least in a friction lock due to the applied pressure force, and wherein the support apparatus (20) as shaped elements (21) includes a plurality of passages (30) through which the workpieces can be guided.

A fixing device (1) for fixing workpieces, to fix substantially rod-shaped workpieces and workpieces to be machined by wire erosion or lasing, including a support apparatus (20) with a plurality of shaped elements (21) for accommodating and supporting a plurality of workpieces in the correspondingly formed shaped elements (21), and for positioning and fixing the workpieces in at least one translatory degree of freedom (22) in the shaped elements (21), wherein the fixing device (1) has a clamping apparatus (50) by means of which pressure force (52) can be applied to a plurality of workpieces accommodated in the shaped elements (21) so that the workpieces are fixed in the clamping apparatus (50) at least in a friction lock due to the applied pressure force, and wherein the support apparatus (20) as shaped elements (21) includes a plurality of passages (30) through which the workpieces can be guided.

A rotation table of the present invention includes a seal mechanism portion including a sealing material arranged between a casing and a face plate, a casing-side grooved portion for forming a casing-side seal mounting groove which is formed on an end of the casing and retains the sealing material, and a seal holding plate for holding the sealing material, wherein a portion having the casing-side grooved portion and the seal holding plate are configured to be separable.