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2. Sharpening - Wikipedia

   en.wikipedia.org/wiki/Sharpening

   Sharpening is the process of creating or refining ... Different techniques are required where the edges are not straight. ... Drill bits - twist drills used for wood ...

3. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   While the above is a common use of center drill bits, it is a technically incorrect practice and should not be considered for production use. The correct tool to start a traditionally drilled hole (a hole drilled by a high-speed steel (HSS) twist drill bit) is a spotting drill bit (or a spot drill bit, as they are referenced in the U.S.). The ...

4. Tool and cutter grinder - Wikipedia

   en.wikipedia.org/wiki/Tool_and_cutter_grinder

   The D-bit (after Friedrich Deckel, [1] the brand of the original manufacturer) grinder is a tool bit grinder designed to produce single-lip cutters for pantograph milling machines. Pantographs are a variety of milling machine used to create cavities for the dies used in the molding process ; they are largely obsolete and replaced by CNC ...

5. Sharpening jig - Wikipedia

   en.wikipedia.org/wiki/Sharpening_jig

   The purpose of the sharpening jig is to hold the blade or tool at the desired angle while grinding or honing the bevel. In some cases, the angle of the bevel is critical to the performance of the cutting edge—a jig allows for repeatability of this angle over a number of sharpening sessions. There are many styles of jig available commercially.

6. Grinding machine - Wikipedia

   en.wikipedia.org/wiki/Grinding_machine

   It can also be used to make and sharpen metal stamping die sets, flat shear blades, fixture bases or any flat and parallel surfaces. Surface grinders can be manually operated or have CNC controls. Tool and cutter grinder, which usually can perform the minor function of the drill bit grinder or other specialist toolroom grinding operations.

7. Drilling - Wikipedia

   en.wikipedia.org/wiki/Drilling

   Drilling is a cutting process where a drill bit is spun to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute.