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<p>[QUOTE=&quot;19Lyds, post: 1556337, member: 15929&quot;]Simple, lathe lines appear in the fields not on the devices.</p><p><br /></p><p>Basically, the blank die get machined down to spec using a lathe. If the modified blank die does not get the proper polishing, these lathe lines end up after the die is pressed into the hub. Of course, since the devices are the deepest portion of the new die, evidence of the lathe lines gets pressed out.</p><p><br /></p><p>When the lines appear on the devices, its usually from some type of polishing brush used either to remove debris build up or simply to rough up the device surfaces for some other operation.[/QUOTE]</p><p><br /></p>

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