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<p>[QUOTE="davidh, post: 487151, member: 15062"]I have, and don't see what you are describing. Show some of yours, why don't you?</p><p><br /></p><p><br /></p><p><br /></p><p>The purpose of upsetting is to raise a rim on the blank to make a planchet. If a blank is run through a v-shaped shaper, where does the rim come from? Photos tell the tale, but you haven't shared yours. I'm willing to be educated.</p><p><br /></p><p>From CoinWorld <a href="http://www.coinworld.com/NewCollector/MintingProcess.asp" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.coinworld.com/NewCollector/MintingProcess.asp" rel="nofollow">http://www.coinworld.com/NewCollector/MintingProcess.asp</a></p><blockquote><p>The upsetting mill consists of a rotating wheel with a groove on its edge. The grooved edge of the wheel fits into a curved section (or shoe) which has a corresponding groove. The distance between the wheel and the shoe gets progressively narrower so that, as the blank is rolled along the groove, a raised rim is formed on both sides of the blank. This raised rim serves several purposes. It sizes and shapes the blank for better feed at the press and it work-hardens the edge to prevent escape of metal between the obverse die and the collar.</p></blockquote><p>[/QUOTE]</p><p><br /></p>
[QUOTE="davidh, post: 487151, member: 15062"]I have, and don't see what you are describing. Show some of yours, why don't you? The purpose of upsetting is to raise a rim on the blank to make a planchet. If a blank is run through a v-shaped shaper, where does the rim come from? Photos tell the tale, but you haven't shared yours. I'm willing to be educated. From CoinWorld [url]http://www.coinworld.com/NewCollector/MintingProcess.asp[/url] [INDENT]The upsetting mill consists of a rotating wheel with a groove on its edge. The grooved edge of the wheel fits into a curved section (or shoe) which has a corresponding groove. The distance between the wheel and the shoe gets progressively narrower so that, as the blank is rolled along the groove, a raised rim is formed on both sides of the blank. This raised rim serves several purposes. It sizes and shapes the blank for better feed at the press and it work-hardens the edge to prevent escape of metal between the obverse die and the collar.[/INDENT][/QUOTE]
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