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<p>[QUOTE=&quot;chip, post: 974685, member: 19122&quot;]I take a three inch piece of quarter inch stainless steel and want to form a 90 degree bend in it, I set the machine to apply a certain amount of pressure and make my part. Then I have to make a 90 degree bend in a 8 foot wide piece of stainless steel, I have to up the pressure immensely in order to make the longer part.</p><p><br /></p><p>When you have only part of the planchet between the dies, you are going to get a much better strike on the part that is struck, because all the pressure is applied to a smaller area.</p><p><br /></p><p>I think that does not mean that the marks you dispute are planchet marks, just that you are thinking that since less of the planchet is in the dies that they somehow do not recieve the full strike, au contraire mon frer, the part that is in the striking area recieves all the pressure. And since part of the planchet is outside the striking area the pressure is concentrated in a smaller area.</p><p><br /></p><p>You could do a simple experiment to prove this, take a 16 ounce hammer and swing it at a cent and then note the cents where you hit it squarely how much it was flattened, compared to the cents you delivered a blow off center to.[/QUOTE]</p><p><br /></p>

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