I picked up an old wire EDM and have it running in the shop. Runs great, but 20 year old controls really stink. It came with a complete spare machine for parts. I'm contemplating refitting the spare machine...

Has anyone done, or seen, a retrofit of a wire EDM? Even another vendor's product?

In particular, control of the sparking and spark gap looks very interesting. I have no idea how this is done.

Karl