This is why I’m asking. Although, similar to laser, a stiff CNC machine is overkill for EDM. Maybe EDM could mount onto Opulo directly even. Opulo uses a modified version of Marlin apparently.
Another application of EDM would be die-sink EDM where you need a CNC to make the dies, and then there’s a natural fit with V1 machines. If you already have a water bath for EDM then you already have the setup for milling graphite.