See those lines radiating like spokes of a wheel? That is die flow lines. In later die states metal is moving outwards. Lines like these, indention's , stretching happens, it is the process of Die Deterioration.
I wrote an article about it here:
http://goccf.com/t/301753&whichpage=3#2581111

I wrote an article about it here:
http://goccf.com/t/301753&whichpage=3#2581111

Edited by Crazyb0
05/09/2018 12:53 am
05/09/2018 12:53 am


























