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Storage area containing assorted bar stock. Bar stock, also (colloquially) known as blank, slug or billet, [1] is a common form of raw purified metal, used by industry to manufacture metal parts and products. Bar stock is available in a variety of extrusion shapes and lengths. The most common shapes are round (circular cross-section ...
Fillet (mechanics) In mechanical engineering, a fillet (pronounced / ˈfɪlɪt /, like "fill it") is a rounding of an interior or exterior corner of a part. An interior or exterior corner, with an angle or type of bevel, is called a "chamfer". Fillet geometry, when on an interior corner is a line of concave function, whereas a fillet on an ...
The flat faces are used to dress the ends of the frets, removing the sharp edges left after the frets are trimmed to length. Half round ring files taper in width and thickness, coming to a point, and are narrower than a standard half round. Used for filing inside of rings. Joint round edge files are parallel in width and thickness, with rounded ...
Blended radii and fillets are preferable to sharp corners for ease of spinning. Sharp corners tend to cause thinning of stock and, in the case of external corners, breakage of wood or masonite chucks. A desirable minimum is 6 mm (1/4 in), although 3 mm (1/8 in) usually causes no problems.
Fullers (light gray) used to displace material (red) In metalworking, a fuller is a tool used to form metal when hot. The fuller has a rounded, either cylindrical or parabolic, nose, and may either have a handle (an "upper fuller") or a shank (a "lower fuller"). The shank of the lower fuller allows the fuller to be inserted into the hardy hole ...
Since planishing hammers are generally in contact with the outside surface of the piece, they are flat, have rounded edges and are polished to avoid marring the work. [5] Pneumatic (air powered) planishing hammers strike hundreds of blows per minute. [6] Care must be taken not to allow sheet metal to harden and become brittle during planishing.
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The triangle shank is almost always made by machining three flats on round bar stock. It is intended as a minor modification of a straight shank, still allowing it to be held in a 3-jaw drill chuck, but allowing higher torque transmission and limited slipping. Can be held in a drill chuck; High torque transmission; Moderately accurate centering