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2. 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.

3. Gimlet (tool) - Wikipedia

   en.wikipedia.org/wiki/Gimlet_(tool)

   A gimlet is a hand tool for drilling small holes, mainly in wood, without splitting. It was defined in Joseph Gwilt's Architecture (1859) as "a piece of steel of a semi-cylindrical form, hollow on one side, having a cross handle at one end and a worm or screw at the other". [1] A gimlet is always a small tool.

4. Machine taper - Wikipedia

   en.wikipedia.org/wiki/Machine_taper

   Spindle nose on a lathe headstock. The small female taper is a Morse taper to take a lathe center or a tool such as a twist drill. The large male taper takes a lathe chuck, which is retained by the large nut. A machine taper is a system for securing cutting tools or toolholders in the spindle of a machine tool or power tool.

5. Hole saw - Wikipedia

   en.wikipedia.org/wiki/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. It is used in a drill. Hole saws typically have a pilot drill bit (arbor) at their center to keep the saw teeth from walking. The fact that a ...

6. Deep hole drilling - Wikipedia

   en.wikipedia.org/wiki/Deep_hole_drilling

   To produce such chamber pockets, high quality pre-drilling is required. If the radially extendable cutting tool holder is controlled via an NC axis and connected to the NC bore slide of the deep hole drilling machine, it is almost possible to produce any bore hole wall contour in one cut over the entire contour length.

7. Reamer - Wikipedia

   en.wikipedia.org/wiki/Reamer

   A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides. There are also non-precision reamers which are used for more basic enlargement of holes or for removing burrs.