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2. 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 ...

3. Core drill - Wikipedia

   en.wikipedia.org/wiki/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 abrasive material and may ...

4. Oscillating multi-tool - Wikipedia

   en.wikipedia.org/wiki/Oscillating_multi-tool

   Tile, grout, and masonry attachments are either carbide or diamond coated and allow the user to clear grout between tiles or do light masonry work. Standard sanding attachments allow the user to sand flat surfaces and specialty attachments such as the profile sanding kit allow detailed profile sanding work to be done.

5. The Easiest Way to Grout Tile - AOL

   www.aol.com/lifestyle/learn-grout-tiles-yourself...

   You'll get the confidence you need to grout a tile floor, wall, shower, and more. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...

6. Grout - Wikipedia

   en.wikipedia.org/wiki/Grout

   A grout saw or grout scraper is a manual tool for removal of old and discolored grout. The blade is usually composed of tungsten carbide . A grout float is a trowel -like tool for smoothing the surface of a grout line, typically made of rubber or soft plastic

7. Pilot hole - Wikipedia

   en.wikipedia.org/wiki/Pilot_hole

   The pilot drill may be a standard twist drill, another type of drill bit appropriate for the material, or, when the primary purpose is precisely locating a hole, may be made with a short, stiff center drill. The pilot hole also reduces the power needed to turn a large drill bit, and reduces the large bit breakage risk.