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Many squares are made of two parts, a stock and a straight blade or tongue. [2] The stock is usually thicker than the blade, with the blade being fixed into or onto the stock. The blade typically has parallel edges. The stock is usually held against the edge of a workpiece or drawing board and the tongue is then used as a straight edge for ...
Rolling (metalworking) In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of ...
[4] [2] The centre finder head has two faces meeting at 90°, when attached one edge of the rule bisects the two faces at 45°. The heads are manufactured from either forged steel, cast iron, die-cast aluminium, die-cast zinc, or plastic. Aluminium and zinc heads are cheaper than steel and iron, but less durable and more prone to inaccuracy. [5]
Ball-peen hammer. A ball-peen or ball pein hammer, also known as a machinist's hammer, [1] is a type of peening hammer used in metalworking. It has two heads, one flat and the other, called the peen, rounded. It is distinguished from a cross-peen hammer, diagonal-peen hammer, point-peen hammer, or chisel-peen hammer by having a hemispherical peen.
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 ...
Square nuts. A square nut is a four-sided nut. Compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening) [citation needed]. They are also much less likely to become rounded-off after repeated ...
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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 ...