Parallel (engineering)
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and a workpiece A parallel is a rectangular block of metal, commonly made from tool steel, stainless steel or cast iron, which has 2, 4 or 6 faces ground or lapped to a precise surface finish. Parallels are used when machining with a mill, drill or any other machining operation that requires work to be held in a vise or with clamps - to keep work parallel or raised evenly such as in a milling vise to give adequate height for the cutting tool/spindle to pass over. Related are 1-2-3 blocks which are also used for setup.
and a workpiece]] A parallel is a rectangular block of metal, commonly made from tool steel, stainless steel or cast iron, which has 2, 4 or 6 faces ground or lapped to a precise surface finish. Parallels are used when machining with a mill, drill or any other machining operation that requires work to be held in a vise or with clamps - to keep work parallel or raised evenly such as in a milling vise to give adequate height for the cutting tool/spindle to pass over. Related are 1-2-3 blocks which are also used for setup. Image:Parralles in vise.JPG|Parallels to raise workpiece Image:Parralles stacked vise.JPG|Parallels with uneven workpiece ==See also== 1-2-3 blocks 2-4-6 block
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