16mm thick vice alignment blocks
I've had these hardened tool steel blocks for my vice for a while, they did not fit as they were too thick. I've WEDM cut 1 mm off to make them fit my vice.
Parameters used: 22A, Ton 5 us, Toff 20 us, 7.5V setpoint
Achieved cutting speed: 1.5mm/min
I've brushed off the oxides of one, so you can see the difference.