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2. Hole saw - Wikipedia

   en.wikipedia.org/wiki/Hole_saw

   Tungsten carbide hole saw with arbor A 52 mm (2.0 in) hole saw with pilot bit A 115 mm (4.5 in) diamond hole saw. A hole saw (also styled holesaw), also known as a hole cutter, [1] is a saw blade of annular (ring) shape, whose annular kerf creates a hole in the workpiece without having to cut up the core material.

3. Annular cutter - Wikipedia

   en.wikipedia.org/wiki/Annular_cutter

   An annular cutter (also called a core drill, core cutter, broach cutter, trepanning drill, hole saw, or cup-type cutter) is a form of core drill used to create holes in metal. An annular cutter, named after the annulus shape , cuts only a groove at the periphery of the hole and leaves a solid core or slug at the center.

4. Machine taper - Wikipedia

   en.wikipedia.org/wiki/Machine_taper

   The R8 system is commonly used with collets ranging in size from 1 ⁄ 8 ″ to 3 ⁄ 4 ″ in diameter or tool holders with the same or slightly larger diameters. The collets or tool holders are placed directly into the spindle and the drawbar is tightened into the top of the collet or tool holder from above the spindle.

5. Broaching (metalworking) - Wikipedia

   en.wikipedia.org/wiki/Broaching_(metalworking)

   The leading (cutting) edge of the broach has a contour matching the desired final shape. The broach is mounted in a special tool holder that allows it to freely rotate. The tool holder is special because it holds the tool so that its axis of rotation is inclined slightly to the axis of rotation of the work.

6. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   An adjustable die may be adjusted either by an integrated screw or by a set of screws set in to the die holder (termed a "die stock"). Integral adjusting screws may be arranged to work axially, where the movement of the adjusting screw into a threaded hole in the die forces the slit section of the die open, or tangentially where a screw ...

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