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<p>Hot perforation melts a hole in the material, causing a reinforced ring around the hole. Hot needle perforation also assists when high density pin patterns are utilized, as the heat aids the perforation of the material.</p>

<p><big>Die and punch</big></p>
<p>Die and punch sets can be used for thicker materials or materials that require large holes; this process is the most common for <a href="page.php?w=metalworking">metalworking</a>. The workpiece is <a href="page.php?w=Shearing_%28manufacturing%29">sheared</a> by pressing (either by machine or hand</p><p>
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