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<p>[QUOTE=&quot;Electron John, post: 2617735, member: 84417&quot;]The examples that robec just posted look to me like someone polished by hand the rougher grit stage of their polishing protocol.&nbsp; By hand I mean they held the die with their hand and and spun in around randomly (often in a figure 8), face down, onto the polished pad (likely with 9um diamond or larger) instead of holding it onto a polishing wheel that was spinning uniformly and creating parallel lines.&nbsp; The Die 1 pictures look to me as if an attempt was made at polishing out the rough lines, which created the smoother areas, but they didn&#039;t spend the needed about of time to get rid of all the lines.&nbsp; When polishing a surface it is very important to hold the sample (die in this case) very flat.&nbsp; Otherwise the edges wear down a bit more and the final polish will not touch them, leaving the larger polish marks around the edge of the flat area as we see in die 1.[/QUOTE]</p><p><br /></p>

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