Abstract: A drill has first, second and third teeth each tooth having a cutting edge at its front end. The cutting edge of the first tooth extends all the way to a center axis of the drill; the cutting edges of the second and third teeth have inner ends spaced from the axis to form a space between one another. A cooling channel extends axially through the drill until approaching the front end of the drill whereupon it becomes inclined relative to the axis and forms an exit port in the space.

Abstract: The invention relates to a double or multiple-edged drilling tool. The drilling tool has a base body (14) which is rotatable about a drilling axis (36), and on which are arranged on the front face at least two plate seats (16) for accommodating identical interchangeable cutting plates (20). The interchangeable cutting plates each have a machining face (30) and a clearance face (24) adjoining a principal cutting edge (28) forming a cutting wedge, and a seat face (26) facing away from the clearance face. A guiding land (34) is furthermore provided, which guiding land adjoins radially outwardly through each edge the machining face (30), the clearance face (24) and optically the seat face (26), and with which land (34) is supported the guiding of the drilling tool into the drill hole.

Abstract: The present invention relates to a V-notched web formed on a drill insert of a drill tool assembly. The V-notched web allows greater stability and feed rates, while decreasing the heat generated at the insert tip. The present invention is provided by a drill insert comprising a drill insert body having at least two cutting edges, a web between the two cutting edges, and a web thinning notch formed on either side of the web. Each web thinning notch forms a notch cutting edge having a positive rake angle.

Abstract: A tool for machining workpieces, having at least one cutting edge which is fastened to a main body of the tool. A respective deburring device removes the burrs produced by each cutting edge during machining. The deburring device is supported at the main body near the cutting edge and is movable by an actuatable piston between a retracted storage position in the tool body and an extended active position out of the tool body for deburring after surface machining.

Abstract: This cutting insert, designed to be inserted into the cutting head of a drill or other similar rotary boring tool, has an arced overall shape, with a concave flank and a convex flank. These flanks are connected by a base face, by two straight end edges one of which is able to act as a guide for the drill and, at the opposite end to the base face, by at least one cutting part, with at least one cutting edge and/or at least one tip. Also described is a boring tool, the cutting head of which comprises such arced inserts, arranged laterally, and associated with a central insert.

Abstract: A method for forming at least one opening in a receptacle comprises the steps of providing a receptacle having a cover with an exterior surface and an interior surface covering a cavity. A cutting mechanism is also provided having at least one blade. The cover is pierced with the blade, and the blade is moved through the cover to cut a portion of the cover and create an opening in the cover to provide access into the cavity. Further, the cut portion curls on top of the exterior surface as the opening is created.

Abstract: A drill bit for use in association with a power or hand drill comprising a drill bit head and shaft. The drill bit head includes a drill bit cutting head and a guide point. The drill bit cutting head includes a first and a second cutting vane. Each cutting vane includes a first cutting edge which extends perpendicular to the axis of rotation and is provided for removing workpiece material, a second cutting edge which extends parallel to the axis of rotation and is provided for forming a substantially smooth workpiece bore, and a channel for facilitating the expulsion of removed workpiece material away from the first cutting surface as the drill bit passes through the workpiece.

Abstract: The invention relates to a drill, especially a Forstner bit or a multi-spur machine bit having a drill shaft and a cutter head and provided with a central mandrel, a first and second spur cutter radially extending towards the outside from said mandrel and in opposite tool approach directions; a respective hollow cylinder segment wall has a circumference cutter defining the circumference of the cutter head and is joined to the ends of the first and second spur cutter, said ends facing the circumference, wherein the wall defines a chip space facing away from the spur cutter and opening to the respective remaining spur cutter and leading to the drill head, and wherein the two cutters are provided with wave-shaped cavities and elevations at least partially along the sides thereof.

Abstract: An earth borer includes a thin-walled tubular shaft (4), a shank (2) provided at one end of the tubular shaft (4), and a drilling head (5) provided at another, opposite end of the tubular shaft, projecting radially beyond the tubular shaft (4), and having at least one cutter for breaking the bore core and (6, 6a, 6b, 6c, 6d) extending, at least partially, radially inward and at least one internal groove (7, 7a, 7b) associated with the at least one cutter, and a releasable tubular connection member (8) for drivingly connecting the shank (2) with tubular shaft (4) for joint rotation with each other.

Abstract: The invention relates to a cutting plate for tools rotating about a tool axis, especially boring tools with several cutting edges. Said cutting plate comprises a major cutting edge (26) which is connected to the minor cutting edge (32) in the radial extension thereof over a cutting corner (30) at a certain angle. A common face (38) is joined to a longitudinal side of the major cutting edge (26) and the minor cutting edge (32), while a major flank (40) or a minor flank (42) is joined to the other longitudinal side of the major cutting edge (26) and the minor cutting edge (32), said flank forming a wedge angle with said face. The aim of the invention is to be able to support the tool on the boring wall (36) with low friction in order to enable extensively vibration-free machining to be carried out even with long projecting tools.

Abstract: There is now provided a rotary cutting tool, particularly a drill, that has at least two cutting edges that respectively comprise a main cutting edge and that respectively are disposed, particularly symmetrically, with respect to the central axis of a cutter portion, whereby the radius of the main cutting edges is less than the maximal cutting edge radius of the cutter portion. A secondary cutting edge is associated with a main cutting edge, this secondary cutting edge is curvilinear in at least a portion and is configured as smooth finishing cutting edge, this secondary cutting edge comprises a plurality of curve-forming radii, whereby in an outer smooth finishing region within the region of the maximal cutting edge radius, the curve-forming radius of the smooth finishing cutting edge is greater than the maximal cutting edge radius. The cutter portion that is adjacent to the outer smooth finishing region is tapered by a taper that diminishes the size in the direction away from the main cutting edges.

Abstract: There is now provided a twist drill and a method for producing a twist drill which method includes forming a flute of a twist drill. The drill has drill material and a tip portion with a cutting lip. The drill has a land structure and a flute to remove chip residue. The land structure has a flute wall and a cutting edge structure that is disposed longitudinally along the flute wall. The cutting edge structure has a first portion at the drill tip portion and a second portion disposed away from the drill tip portion. The flute wall extends further into the land structure at the second portion of the cutting edge structure than at the tip portion to provide a greater amount of drill material at the tip portion than at the second portion of the cutting edge structure.

Abstract: A large diameter self-feed wood bit is provided including a feed spur having a coarse spur thread of approximately 1.75 millimeters and a 20-degree main cutting edge relief angle. The main cutting edge relief angle complements the coarse self-feed thread pitch for faster, more efficient drilling of large diameter holes in wood.

Abstract: A cutting tool has a flute and land, which follow a helix angle, wherein the flute and land are connected to one another with a convex heel to provide a smooth contour to the tool surface and to provide improved performance. A grinding wheel for producing a cutting tool, along with a method for using such a grinding wheel, is also disclosed. Finally, a crush roll for dressing such a grinding wheel is also disclosed.

Abstract: A rock drill having a helical shank (3) and a drill head (2) is proposed, this rock drill having a main cutting tip (6), inclined in a roof shape, and secondary cutting tips (14, 15) arranged in a cross shape thereto. In order to produce an enlarged chip space for the secondary cutting tips (14, 15), the end face (20) of the drill head (2) is designed in a step shape, so that a shoulder (25) is obtained for forming an additional chip volume (27).

Abstract: This bit has an axis and a tip end with an obtuse angle. There are multiple scraping surfaces, each facing counter-clockwise into a longitudinal recess in the tip end. Each scraping surface has a scraping edge at an angle of about 55° to 70° to the axis. Behind each scraping surface the outer surface of the tip end curves down to a rearward edge adjacent another of the longitudinal recesses, the rearward edges each being disposed at a sharper angle to the axis than the scraping edge so that there is some relief, allowing the scraping edge to be more pronounced and enhance its ability to dig into the metal of a deformed screw at points removed from the axis to get a good purchase on the screw.

Abstract: A drill having a cutting edge that is less prone to chipping or fracturing when used in drilling operations, and that can be sharpened or resharpened uniformly and consistently from drill to drill by machine grinding. The drill comprises a body and at least one flute formed in the body that terminates in a cutting edge at the cutting end of the drill. The flute has a cutting surface, the cutting surface having formed therein a dub face having a substantially planar surface over at least a portion thereof that is proximate to the cutting edge. The cutting edge has formed therein a cutting land having a substantially planar surface over at least a portion thereof connected at an edge to the planar surface portion of the dub face.

Abstract: A method and apparatus for testing plumbing installations including a tool for making an opening through a test cap or other blockage in a fluid-carrying line of a plumbing system. The tool and cap make the testing method possible. During the rough-in plumbing phase of construction, a test cap welded in the drain pipe seals the drain line from the sewer line at the location of the clean-out. Thereafter, the rough-in plumbing system is tested by pressurizing the system through the clean-out on the building side of the cap. Following successful completion of this test, the top-out plumbing is completed, leaving the test cap welded in place. After the roof vents are in, the top-out test of the plumbing system is made, also through the clean-out. After final test and inspection, a special tool constructed in accordance with the present invention is inserted down the clean-out to penetrate and ream-out the test cap.

Abstract: This invention describes a drilling plate and bracket for the drilling plate for machining drilled holes in work pieces, whereby the bracket for the drilling plate is designed so that it is somewhat pin-shaped and holds the drilling plate on its front side. It is characterized in that the drilling plate (1) is designed with an enlarged sheet thickness in the area of the cutting geometry in which chip breaking contours (15, 16, 20) are formed.

Abstract: A cutter bit is provided which includes a body having a pair of free ends with a cutter bit mounted adjacent each free end. A boss extends outwardly from the center of the body such that a portion of the body and the cutter bit may be mounted in a rotary cutting tool to allow the second cutter bit to be utilized. The bit is reversible such that either cutter bit may be positioned within the chuck of a rotary cutter tool while the cutter bit mounted on the opposite side of the body is utilized. A method of mounting a cutter bit in a rotary cutter tool is also provided which includes steps of loosening the bit within the chuck of the rotating cutting tool, removing the bit from the chuck, rotating the bit end to end, replacing the end of the bit that was out of the chuck originally into the chuck, and tightening the chuck.

Abstract: A method for reaming a hole in a metal substrate that minimizes the tendency of long and stringy metal chips to be formed that can surround the reamer with a “steel wool-like” mesh or mass of material, as well as an improved reamer for carrying out this method. The reaming method involves longitudinally advancing the chamfered end of the reamer into the hole at an increased rate of at least about 5 mils (0.13 mm) per cutting edge as the hole is reamed during rotation of the reamer. For holes or bores having a length (L) that is at least about 3 times the cutting diameter (D) of the reamer, a preferred subsequent step is to momentarily reduce the rate of advance of the chamfered end into the hole to about 1 mil (0.025 mm) or less per cutting edge for from about 1 to about 5 rotations of the reamer.

Abstract: The invention relates to a drill, especially a Forstner bit or a multi-spur machine bit having a drill shaft and a cutter head and provided with a central mandrel, a first and second spur cutter radially extending towards the outside from said mandrel and in opposite tool approach directions; a respective hollow cylinder segment wall has a circumference cutter defining the circumference of the cutter head and is joined to the ends of the first and second spur cutter, said ends facing the circumference, wherein the wall defines a chip space facing away from the spur cutter and opening to the respective remaining spur cutter and leading to the drill head, and wherein the two cutters are provided with wave-shaped cavities and elevations at least partially along the sides thereof.

Abstract: A cutting point for a drill including a body having a periphery. The cutting point includes a leading cutting lip and a trailing cutting lip and a central chisel edge extending between the leading and trailing cutting lips and defining two symmetrical drill point halves. Each drill point half includes a primary relief surface, a secondary relief surface and a third relief surface. The third relief surface is inclined at an angle greater than the secondary relief surface and the secondary relief surface is inclined at an angle greater than primary relief surface.

Abstract: A machining tool for bores in thin-walled work pieces with at least one cutting plate is recommended that is characterized in that the at least one cutting plate (9, 9′, 9″; 9a, 9′a) is inserted into the circumference surface (15) of the tool (1) in such a way that two viewed in pivot direction—guide surfaces (31, 33) arranged at a distance to one another are present, which serve as a support of the tool (1) at the machining work piece surface.

Abstract: The invention relates to a boring tool comprising a retaining device which extends in the direction of a longitudinal axis and which comprises a shaft section and a head section. A groove which runs orthogonal in relation to the longitudinal axis and in the direction of a transversal axis is configured in said head section. The boring tool also comprises a cutting insert which is inserted in the groove, and comprises a clamping element. Said clamping element passes through a receiving boring configured in the cutting insert and through a boring configured in at least one of the groove limbs. In addition, the clamping element clamps the cutting insert against the at least one groove limb.

Abstract: A tool for removing a tubular member having a threaded exterior, such as a pipe fitting, from a threaded bore. The tool includes a pilot section for guiding the tool into an interior of the tubular member, a shank section adapted for connection to a drill chuck, and a central body for engaging the tubular member. The central body has a cross section transverse the longitudinal axis that is generally circular and that tapers in diameter from the shank section toward the pilot section along an entire length of the central body. At least one flute extends along a helical path on an exterior surface of the central body. The pilot section guides the central body into the interior of the tubular member to grind away the tubular member without damaging the threaded bore.

Abstract: A rotary boring tool adapted to include a locator insert for precision positioning of cutting tips provided on multiple cutting elements or inserts is disclosed. The boring tool comprises a tool body, a plurality of replaceable cutting inserts and an insert locator. The tool body includes a first end having a shank portion and a second end having a plurality of cutter insert supports, a plurality of cutter insert recesses and an insert locator recess. The outside surfaces of the shank portion and the flat portions of the insert locator are jig ground to a 0.000 variance relative to a central rotational axis of the tool body. The insert locator is secured to the tool body at a base surface of the insert locator recess. The cutting inserts are secured to the second end of the tool body so that they contact base surfaces of the cutting insert recesses, first radially and axially extending lateral or side surfaces of the cutting insert supports, and the flat portions of the insert locator.

Abstract: An outer diameter deburring tool for deburring a tubing with an outer diameter. The outer diameter deburring tool, includes: a plunger button assembly; an adapter handle, the adapter handle accepting the plunger button assembly; an outer diameter cutter for deburring the outer diameter of the tubing, the outer diameter cutter communicating with the adapter handle; and, a plunger stem assembly, the plunger button assembly communicating with the plunger stem assembly such that the plunger button assembly being able to change the position of the plunger stem assembly, the plunger stem assembly being able to prevent burrs from entering the tubing while the outer diameter cutter removes burrs from the outer diameter of the tubing.

Abstract: A process and a tool for high performance fine machining of boreholes employs a rotary tool with a shaft with at least one longitudinal channel for coolant and lubricant and a cutting head with at least one cutting edge and a chip groove, wherein a back rake (&ggr;) of a minor cutting edge of less than 0° is used. The relationship of the back rake (&ggr;) to the cutting edge (&kgr;) of the tool is such that the smaller the back rake angle (&ggr;), the larger the cutting edge angle (&kgr;).

Abstract: In a cylindrical drill bit comprising a tool body with a head having a front face and a cylindrical shaft for chucking the tool body, a hard metal cutting plate structure is mounted on the front face of the head and includes cutting edges formed integrally with the hard metal cutting plate.

Abstract: In order to improve durability, machining stability, machining accuracy, etc. of a throwaway cutting tool in which a cutting head having a cutting edge is detachably mounted to the tip of a tool body using a clamping tool so that its function can be regenerated by replacing the cutting head, protrusions 8, 16 having their height gradually increasing and recesses 9, 15 having their depth gradually increasing from the center toward outer periphery of the tool are formed alternately with each other in a radial arrangement on the front surface of the tool body 2 and a support surface of the cutting head 3, which is formed by sintering, respectively. The protrusions and recesses, which are provided so that their positions correspond to each other, are conically engaged, thereby centering the cutting head and preventing its movement.

Abstract: A tool for removing a tubular member having a threaded exterior, such as a pipe fitting, from a threaded bore. The tool includes a pilot section for guiding the tool into an interior of the tubular member, a shank section adapted for connection to a drill chuck, and a central body for engaging the tubular member. The central body has a cross section transverse the longitudinal axis that is generally circular and that tapers in diameter from the shank section toward the pilot section along an entire length of the central body. At least one flute extends along a helical path on an exterior surface of the central body. The pilot section guides the central body into the interior of the tubular member to grind away the tubular member without damaging the threaded bore.

Abstract: A boring tool is proposed which has a cutting portion at one end thereof, a driver engaging portion at the other end thereof, a shank arranged between the cutting portion and the driver engaging portion. The shank is formed with a helical groove for discharging cuttings. The driver engaging portion has a hexagonal outer shape and is formed with a hexagonal hole and a recess at bottom of the hexagonal hole for receiving the tip of a driver. The cutting portion has a pointed tip and a substantially conical shape, a first recess formed by cutting off substantially a 180° section of the cutting portion as seen axially from the pointed tip with an edge in the rotational direction forming a cutting edge, and a second recess formed by cutting off substantially a 90° section of the remaining 180° section. The second recess is separated from the first recess by a thin-walled partitioning wall.

Abstract: A drill tool body member having a pilot drill at a cutting end thereof and having a remote end axially spaced therefrom and a pair of frustum cutters mounted on the tool body member adjacent the pilot drill and walls in the peripheral surface of the tool body member defining an axially extending depression or flute extending from regions adjacent each of said frustum cutters to regions adjacent said remote end.

Abstract: A tapered reamer is disclosed. The reamer is used to make a tapered opening in a cylinder used in a crossing gate repair kit. A straight reamer is also disclosed.

Abstract: A large diameter self-feed wood bit is provided including a feed spur having a coarse spur thread of approximately 1.75 millimeters and a 20-degree main cutting edge relief angle. The main cutting edge relief angle complements the coarse self-feed thread pitch for faster, more efficient drilling of large diameter holes in wood.

Abstract: In a cylindrical drill bit comprising a tool body with a head having a front face and a cylindrical shaft for chucking the tool body, a hard metal cutting plate structure is mounted on the front face of the head and includes cutting edges formed integrally with the hard metal cutting plate.

Abstract: A drill bit for boring non-linear holes in a workpiece, the drill bit having a generally elongate post, for mounting the drill bit to a tool; a generally elongate shank; and a head. The head has a front portion, a rear portion and there between a main body portion. A plurality of flutes are arranged in a generally helical shape along the main body portion, arched with respect to a longitudinal direction of the drill bit, each flute having an outer cutting edge arranged on an outside edge of the flute, to provide cutting capability in a direction substantially sideways compared to the longitudinal direction of the drill bit. A central point, arranged on the front portion of the head, is connected to at least one flute via a tapered first cutting portion, the first cutting portion being provided with a first cutting edge, to provide cutting capability in a direction substantially forwards.

Abstract: A method for reaming a hole in a metal substrate that minimizes the tendency of long and stringy metal chips to be formed that can surround the reamer with a “steel wool-like” mesh or mass of material, as well as an improved reamer for carrying out this method. The reaming method involves longitudinally advancing the chamfered end of the reamer into the hole at an increased rate of at least about 5 mils (0.13 mm) per cutting edge as the hole is reamed during rotation of the reamer. For holes or bores having a length (L) that is at least about 3 times the cutting diameter (D) of the reamer, a preferred subsequent step is to momentarily reduce the rate of advance of the chamfered end into the hole to about 1 mil (0.025 mm) or less per cutting edge for from about 1 to about 5 rotations of the reamer.

Abstract: This invention describes a drilling plate and bracket for the drilling plate for machining drilled holes in work pieces, whereby the bracket for the drilling plate is designed so that it is somewhat pin-shaped and holds the drilling plate on its front side. It is characterized in that the drilling plate (1) is designed with an enlarged sheet thickness in the area of the cutting geometry in which chip breaking contours (15, 16, 20) are formed.

Abstract: A pipe end chamfering tool for creating a bevel on the inside diameter or the outside diameter, or the inside and the outside diameter of a pipe end. The tool includes a body, one or more first projections, and at least one chamfering region at the juncture of the body and each first projection. The chamfering region is configured to cut either an inside bevel, or an outside bevel, or both an inside and an outside bevel on a pipe end. The first projection has a proximal, a middle and a terminal segment. The middle segment has a width essentially equal to the inside diameter of the pipe to be chamfered and stabilizes the pipe during chamfering. The terminal segment is semicircular and is oriented perpendicular to the plane of the proximal and middle segments. The terminal segment collects and allows removal of chips or shavings created on the inside of the pipe during chamfering.

Abstract: A tool for machining workpieces, having at least one cutting edge which is fastened to a main body of the tool. A respective deburring device removes the burrs produced by each cutting edge during machining. The deburring device is supported at the main body near the cutting edge and is movable by an actuatable piston between a retracted storage position in the tool body and an extended active position out of the tool body for deburring after surface machining.

Abstract: A laser beam is directed onto a bonding surface of a steel tool body to form a molten melt pool. Particles of high speed steel alloy are flowed into the melt pool and melt in the melt pool. The laser beam is moved along the bonding surface to form solid lines of high speed steel laser cladding metallurgically bonded to the cutter portion at the bonding surface and to each other. The cladding is abraded to form the cutting edge of a composite cutting tool.

Abstract: A drill bit, includes a shank and a cutter head connected to the shank. The cutter head has a center point, and first and second cutting edges extending radially outwards from opposite sides of the center point, wherein the first and second cutting edges are formed along their radial extension with valleys and peaks in alternating disposition such that in relation to the center point, as viewed in radial direction, the valleys of the first cutting edge are arranged at locations where the peaks of the second cutting edge are disposed, and the peaks of the first cutting edge are arranged at locations where valleys of the second cutting edge are disposed.

Abstract: A force balanced irregular pitch reamer is provided that is particularly well suited for precision operations requiring small tolerances. More specifically, a reamer is provided having a shank, a body portion, and a plurality of cutting teeth extending outwardly therefrom. The teeth are spaced at non-uniform intervals around the body portion, wherein each tooth includes a cutting surface and rake face, and defines a rake angle between the rake face and an imaginary line extending from the central or longitudinal axis of the reamer to the cutting surface. In operation, the reamer is rotated about its central axis and is plunged into a formed hole sized slightly smaller than the reamer such that the reamer engages the workpiece and produces a smooth finished hole. Each tooth generates a cutting force with determinable magnitude and direction to define cutting force vectors.

Abstract: A fluteless pyramid point drill for spotting holes for drills having an included angle from 90-160°. The preferred tool is double ended. Another embodiment features the pyramid point on the back end of a penetrating drill. An enhanced pyramid point geometry enables construction from technical ceramics. These embodiments included a notched pyramid, a dual pyramid, a beveled pyramid, and an eccentric pyramid. Another embodiment utilizes a grooved-body hollow pyramid for reaming holes. Geometries for a single sided penetrating drill for drilling hardened materials include a limited flute with a flute depth of ⅓ the drill diameter. Point angle embodiments include a 0-20° primary cutting edge and a steeper relief angle with a negative rake along the edge, a radial edge and steep relief angle with a negative rake along this edge. Additionally a pyramid point may be superimposed on the dual point angle for superior centering guidance.

Abstract: A spade blade drill having blended open notch forms on either side of an apex. The notches transition into elliptical flutes which extend outwardly toward sides of the insert. The elliptical flute profiles inhibit chip curling and packing. The sides incorporate a pair of surfaces having a reduced clearance angle for preventing chip packing. The blended open notches are deep and extend across the entire width of the flutes, enhancing heat transfer surface area and allowing chips to flow along the entire flute surfaces. A plurality of chip splitters extend from the flutes across two relief surfaces. The chip splitters have a rounded profile, inhibiting chips from becoming hung in the splitters.

Abstract: A wood boring drill bit assembly includes a cast cutting head body having a front cutting portion, a rear connecting portion and a central longitudinal axis extending from the front portion to the rear portion. A stem extends axially rearward from the rear connecting portion. A pair of helically-shaped wings extend from the front cutting portion in opposed radial directions along the longitudinal axis. Each wing has an axially forward surface, a side surface, a trailing surface, and a machined cutting edge. The cutting head body has a tapered surface extending from the side surface of each wing to the rear connecting portion near the stem to allow for smooth retraction of the cutting head body from a drilled hole.

Abstract: A modified Forstner type drill bit includes a shank and a drill head. The drill head includes a center brad, first and second radial cutters, first and second following rims and first and second chip channels. The center brad defines a longitudinal direction. The first and second of radial cutters extend radially from the center brad. The first and second following rims extend circumferentially from and following from in the direction of rotation the distal end of the first and second radial cutters respectively. Each following rim is divided into a plurality of segments, each have a top portion. The top portion of the segments of each following rim are generally in the same plane. The first and second chip channels are positioned adjacent to and before in the direction of rotation the first and second radial cutters respectively. The first and second chip channels are between the one of the first and second radial cutter and the second and first following rims.

Abstract: A cutting tool (200, 202) has a longitudinally extending shaft portion (208) with a chucking part (204) and a cutting head (206). A cutting edge (220) is formed on the cutting head (206). The cutting edge (220) includes at least one cutting portion. A rake surface (224) is formed adjacent to at least one of the cutting portions (220) with the rake face being at a rake angle in the range from about −10° to about 10°. A clearance face (226) is formed adjacent to the at least one cutting portion opposite the rake face (224). The clearance face (226) is at a clearance angle in the range from about 10° to about 50°. An edge radius between the rake face and the clearance face is at a radius of from about 0.0003 to about 0.0040 inch.