When the machine gets slightly loose or showing wear, the movement of the dies post strike, push against the fresh struck dies. This push is called push
Machine Doubling. Sometimes it is slight, sometime affects the bottoms/mid/upper areas of the devices on one side of the devices. When extreme, it pushes the devices so much that it enlarges the devices.
Note the top two examples. You can see real strong push movement of the devices.
Also the push can vary from strike to strike:
Note the same markers, from the same batch or run from a certain time period. Thus the looseness push is slightly different from strike to strike. Just like a loose part, it can move differently in what every way the machine allows. the Example on your coin above the hands creates glare on that area. That push flattens and removes contour on that area of the dies devices. Thus altering the coin, post strike. Thus this is a machine issue, not a die issue. (because the strike had already happened) Doubled dies are caused by the die, not my
Machine Doubling. You can have
Machine Doubling on a doubled die,
but Machine Doubling never creates a doubled die.
CoopHome:
What is push on a loose machine issue? the allowance of movement post strike that alters the struck devices. this will never create a doubled die.
Hope this helps.
Posted 02/07/2023 11:01 am
