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Incomplete Clip Question

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Zimmy's Avatar
United States
460 Posts
 Posted 11/17/2014  7:19 pm Show Profile   Bookmark this topic Add Zimmy to your friends list Get a Link to this Message Number of Subscribers
Can an incomplete clip affect only one side of planchet especially if the incomplete clip that would be showing is relatively light?
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coop's Avatar
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62064 Posts
 Posted 11/17/2014  10:49 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Images would be a great help. If it is a straight clip incomplete planchet it might be stronger on one side because this involves the edge of the roll stock. Other clips are usually cut straight through.
Incomplete-Clip-Question
Incomplete-Clip-Question
Straight and curved clips on same coin.

Blakesley affect can affect one side or both. Depending if the blank raised on one side during the upset process.
Incomplete-Clip-Question
Incomplete-Clip-Question
Incomplete-Clip-Question
Edited by coop
11/18/2014 06:39 am
Valued Member
Zimmy's Avatar
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 Posted 11/17/2014  10:58 pm  Show Profile   Bookmark this reply Add Zimmy to your friends list Get a Link to this Reply
Thanks for the reply but I was referring to an "incomplete" clip not a clip. I don't have the coin....I was just was asking the question.
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coop's Avatar
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 Posted 11/17/2014  11:06 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Well an incomplete planchet is AKA as a "Clip." They are the same thing. Just the proper term is "incomplete planchet"
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unholyroller's Avatar
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 Posted 11/17/2014  11:32 pm  Show Profile   Bookmark this reply Add unholyroller to your friends list Get a Link to this Reply
I think Zimmy is referring to a clip that isn't missing the piece. The punch die didn't cut completely through the planchet and still retains the smaller piece
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coop's Avatar
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62064 Posts
 Posted 11/18/2014  01:28 am  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Probably damage then. There is a lot of force used to cut the blanks.
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pyrbob's Avatar
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1943 Posts
 Posted 11/18/2014  05:30 am  Show Profile   Bookmark this reply Add pyrbob to your friends list Get a Link to this Reply
Zimmy, I would think this is possible especially with a light incomplete clip. I think it would take more pressure to form the groove on the female die side of the coil stock than on the punch side. So very light contact by the punch press could conceivably leave a light groove on the punch side with a minimal groove on the other side. This is just my guess from my manufacturing experience. Other possibilities are something was under the coil stock blocking contact with the female die or the punch and die heads were not properly aligned. It will be interesting to see if Mike jumps in and helps out with this question. I do have an incomplete clip I found roll hunting years ago. I don't remember what it looks like anymore but I think it is a typical example and not what you are asking about. I will try to find it this weekend and compare both sides.
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Zimmy's Avatar
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 Posted 11/18/2014  10:05 am  Show Profile   Bookmark this reply Add Zimmy to your friends list Get a Link to this Reply
Thanks everyone for your responses......normally there is evidence on both sides of the planchet but I recently saw what appeared to be a relatively light arcing line on one side only, that started at the rim and then faded out around the center of the coin. There was no evidence on the other side of any arcing line indentation.
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ErrorCoins222's Avatar
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1699 Posts
 Posted 11/20/2014  01:44 am  Show Profile   Bookmark this reply Add ErrorCoins222 to your friends list Get a Link to this Reply
I would also think that that could happen, but I think it might be tough to authenticate.

Was this at all a clad piece? If so, you may be able to use the edge to determine if the "arch" was applied to the planchet before it was struck. But then again, maybe the strike of the punching dies was so light, that it wouldn't even effect the clad layering of the edge.

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