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The Mozambique Drill, [1] also known as the Failure Drill, Failure to Stop drill, or informally as "two to the body, one to the head", [2] [3] is a close-quarters shooting technique that requires the shooter to fire twice into the torso of a target (known as a double tap or hammered pair to the center of mass), and follow up with a more difficult shot to the head that, if properly placed ...
Today, the site of the building is on the campus of University of Houston–Downtown. A February 1914 advertisement for the Sharp-Hughes Tool Company in Fuel Oil Journal. Hughes Tool Company was an American manufacturer of drill bits. Founded in 1908, [1] it was merged into Baker Hughes Incorporated in 1987.
Gun drills (through coolant drill) are straight fluted drills which allow cutting fluid (either compressed air or a suitable liquid) to be injected through the drill's hollow body to the cutting face. They are used for deep hole drilling —a depth-to-diameter ratio of 300:1 or more is possible. Gun barrels are the obvious example; hence the name.
A Tool and Cutter Grinder is used to sharpen milling cutters and tool bits along with a host of other cutting tools. It is an extremely versatile machine used to perform a variety of grinding operations: surface, cylindrical, or complex shapes. The image shows a manually operated setup, however highly automated Computer Numerical Control (CNC ...
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.
Sharpening. Sharpening is the process of creating or refining the edge joining two non-coplanar faces into a converging apex, thereby creating an edge of appropriate shape on a tool or implement designed for cutting. Sharpening is done by removing material on an implement with an abrasive substance harder than the material of the implement ...
Drill bit. From top: Spade, brad point, masonry, and twist drills bits. Drill bit (upper left), mounted on a pistol-grip electric drill. A set of masonry drills. A drill bit is a cutting tool used in a drill to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shapes and can create ...
Died. February 27, 1897. (1897-02-27) (aged 62) Salem, Oregon. Occupation (s) Gunsmith, Inventor, Merchant. Drawing of his Forstner bit in his patent CA23548. Benjamin Forstner (March 25, 1834 – February 27, 1897), was an American gunsmith, inventor, and dry goods merchant.