dumdum:
Thank you again for some thought provoking information. I can at least now, to a degree, picture the process. To have used my piece in the course of making the female die must have required considerable heat of that receiving metal so to have achieved the aim without destroying the "hub". This exactly as you mentioned. It must surely have taken a lot of trial and error in the beginning days. People experienced in the process would have built up the experience with the metals and the presses.
I did read an article on this site some years ago about the pressing of badges that had a reference about one very old press that was kept running in the UK. It was deemed necessary because it was the only one that could keep producing consistent results in stamping out badges. Yet another example of a skill that has slowly been lost to time.
Don
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