Well it's been an awfully long time but I've got to play with the Wire EDM machine over the last few days.
Grand daughter has just gone off to University and for some strange reason asked if 'any of those machines in your workshop could cut a penny in two' Well not my place to reason why so initially I just used a pair of stout tin snips with one arm clamped in the vice. Yes it cut, but one half shot off into the deep recesses of the workshop and the other was rather distorted.
So I thought - really this is a job for the Fanuc Tapecut wire EDM machine. I've not used it for literally several years but lets see what happens. Powered up a treat, even had several programs still stored in its bubble memory, but after a few power on / offs it reported a memory fault requiring a wipe of the contents. No matter I need to load a simple cut off program anyway.
Program generated in Featurecam - now how the devil does the load sequence work

Manual was rather vague - I'd done it many times before but that was about five years ago.
In the end to get the job done I hand keyed it in at the control panel and OK we have two halves of a penny as requested. But that's NOT good enough - so I spent absolutely ages going round the houses, to find eventually that the USB to multiple Com port adapter on my workshop PC at some time over the years had reconfigured itself so what was Com3 had become Com4 and vice-versa. OK sort that out and hoo ray I can upload code - it only took three days to sort it out!
Right - lets get a bit more adventurous and cut coins with curved lines - so I did !

Here is a rather long and boring video of cutting in process
https://youtu.be/bkKTLsISxFY