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2. Diamond tool - Wikipedia

   en.wikipedia.org/wiki/Diamond_tool

   Hollow steel tube with diamond tipped segments for drilling holes through concrete walls in the construction industry, porcelain tiles or granite worktops in the domestic industry, or also used for sample core extractions in the mining industry.

3. Core drill - Wikipedia

   en.wikipedia.org/wiki/Core_drill

   Truck-mounted core drill. A modern core drill is a drill specifically designed to remove a cylinder of material, much like a hole saw. The material left inside the drill bit is referred to as the core. Core drills used in metal are called annular cutters. Core drills used for concrete and hard rock generally use industrial diamond grit as the ...

4. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   Holes in hard materials are needed for anchor bolts, concrete screws, and wall plugs. Hammer drills are not typically used for production construction drilling, but rather for occasional drilling of holes into concrete, masonry or stone. They are also used to drill holes in concrete footings to pin concrete wall forms and to drill holes in ...

5. Continuous flight augering - Wikipedia

   en.wikipedia.org/wiki/Continuous_flight_augering

   A continuous flight auger drill is used to excavate a hole and concrete is injected through a hollow shaft under pressure as the auger is extracted. Reinforcement is then inserted after the auger is removed. [1] This creates a continuous pile without ever leaving an open hole.

6. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   A star drill bit, similar in appearance and function to a hole punch or chisel, is used as a hand powered drill in conjunction with a hammer to drill into stone and masonry. A star drill bit's cutting edge consists of several blades joined at the center to form a star pattern.

7. Drilling - Wikipedia

   en.wikipedia.org/wiki/Drilling

   For heavy feeds and comparatively deep holes oil-hole drills are used in the drill bit, with a lubricant pumped to the drill head through a small hole in the bit and flowing out along the fluting. A conventional drill press arrangement can be used in oil-hole drilling, but it is more commonly seen in automatic drilling machinery in which it is ...