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<p>[QUOTE=&quot;expat, post: 4598226, member: 111067&quot;]This is what I found </p><p>One of the simpler errors, and one of the easier to understand, is known technically as the “incomplete planchet error,” although it is almost universally known by its more common name of “clip.” Purists are rankled by this misuse of terminology, insisting that clipping should only refer to the nefarious process in old times of shaving a slight amount of precious metal off the edges of coins. Reeding was added to the edges of coins to prevent and readily identify clipping.</p><p><br /></p><p><br /></p><p><br /></p><p>&nbsp;Error collectors divide errors into three broad categories: planchet errors, die errors, and strike errors. The incomplete planchet error, as can be guessed, is a type of planchet error. The actual error occurs when the blanks are being punched from the metal strip, near the beginning of the process. Sometimes, these errors can be quite dramatic, with a large percentage of the planchet missing. More often, only a small percentage is “clipped.”</p><p><br /></p><p><br /></p><p><br /></p><p>As the metal strip is being fed into the blanking machine, a punch and cutter cut circular blanks out of the strip. After each punch, the strip is fed an incremental amount further into the machine.&nbsp; However, sometimes the strip slips or gets stuck, and doesn’t move the full increment. For example, if the strip is fed at the wrong speed, the strip will not move far enough between punches. If this happens, the punch will then overlap the previously punched hole – and the resulting planchet will be incomplete. It will have a crescent missing with exactly the diameter of the punch[/QUOTE]</p><p><br /></p>

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