The CHMER CNC EDM drillers can both EDM drill the jet engine cooling holes, but also EDM mill the fan shaped diffuser shapes using the same tubular brass or copper electrodes. This allows for one setup in one EDM and one dielectric, deionized water to complete all of the EDM work. The CHMER CNC drillers also offer a new optional probing software package to allow for easy probing of the engine blade in the fixture and quickly re-orienting the software program to fit the mounted blade. Automatic electrode and guide changers are available. Submerged cutting options are also available.