Message:

<p>[QUOTE=&quot;Pickin and Grinin, post: 2898909, member: 73995&quot;]Please, don&#039;t take this as argumentative, And I understand that a late die state will cause these heavy flow lines, and yes, they do happen on the devices. Attached, is a study of die polishing at the US mint.</p><p><br /></p><p><a href="https://archive.org/stream/studyofdiepolish8736oust#page/n39/mode/2up" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://archive.org/stream/studyofdiepolish8736oust#page/n39/mode/2up" rel="nofollow">https://archive.org/stream/studyofdiepolish8736oust#page/n39/mode/2up</a></p><p><br /></p><p>Looking at these polishing wheels, that are 3/4&quot; in diameter. </p><p>Are you saying that a worker couldn&#039;t have used the edge of the wheel? Yes, it may be the wrong way to get the job done, but I can imagine that it was done. Using the edge in the event of a quick polish to remove a clash. Would and could leave polishing lines through the devices. Especially, if the abrasive disc was not properly centered on the wheel.</p><p><br /></p><p>IE I see lines that do not conform to late die state metal movement.</p><p>The lines are slightly arched leading me to this conclusion.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in