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Posted 03/30/2015 12:40 pm
I have been thinking about Mike Diamond's explanation:
And
Since the area between my arrows, the cornice above columns 9 and 10, is raised...this means that virtually the entire rest of the die is sinking and only that portion is raised. Maybe I am not understanding all this quite correctly, but that is hard to visualize?
It would be easier to visualize if the area between the arrows had been the portion which shows as sunken!
Quote:
It looks like the area on the Memorial is flanked by two bi-level die cracks. Any bi-level die crack is defined by a sinking-in on one side of the crack; that's why it has a stepped appearance.
It looks like the area on the Memorial is flanked by two bi-level die cracks. Any bi-level die crack is defined by a sinking-in on one side of the crack; that's why it has a stepped appearance.
And
Quote:
In the case of a bi-level die crack, the cracking (and the subsurface deformation associated with it) is the sole cause of the uneven surface.
In the case of a bi-level die crack, the cracking (and the subsurface deformation associated with it) is the sole cause of the uneven surface.
Since the area between my arrows, the cornice above columns 9 and 10, is raised...this means that virtually the entire rest of the die is sinking and only that portion is raised. Maybe I am not understanding all this quite correctly, but that is hard to visualize?
It would be easier to visualize if the area between the arrows had been the portion which shows as sunken!
Edited by Pete2226
03/30/2015 12:42 pm
03/30/2015 12:42 pm
I was thinking of the coin surface and should have been visualizing the surface of the die! Now it all comes together and makes perfectly good sense! 
