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Examples
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Three or four good center-punch dents upon the wire over the slot will help to expand it.
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A center-punch or sharp-pointed punch for making dents in metal.
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Having passed this file test at several points, the gears go to the center-punch test.
The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916
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These give a record confirming the center-punch tests, which, if the angle of the center punch is kept at 120 deg. and the weight of the hammer and blow are uniform, is very accurate.
The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916
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After passing the center-punch test the ends of the teeth are peened lightly with a hammer.
The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916
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Just in case you were wondering, yes, yes I am the guy who took a center-punch to the center of Eckhart’s chin.
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