EDM Machinist

Duties and Responsibilities

•  Set up and operate Wire EDM machines (such as Mitsubishi and Current) for production and prototype runs

•  Set up and operate HP EDM machines, including electrode selection, dielectric fluid management, and gap control

•  Read, interpret, and program using NC/CNC EDM code specific to EDM control systems — not general G-code programming

•  Select appropriate wire types, diameters, and tension settings based on material and tolerance requirements

•  Interpret engineering drawings, GD&T callouts, and 3D models to verify part conformance

•  Perform in-process inspection using precision metrology instruments including micrometers, CMM, optical comparators, and surface finish gauges

•  Perform secondary operations including deburring, cleaning, and surface preparation specific to EDM-produced parts

•  Maintain machine electrode wear logs, dielectric fluid levels, and filter change schedules

•  Troubleshoot EDM-specific issues including wire breakage, surface finish defects, and electrode wear deviation

•  Ensure all finished parts meet customer specifications and internal quality standards

Minimum Requirements

•  Completion of a formal EDM operator/machinist training program or apprenticeship — general CNC machinist training without EDM-specific curriculum does not satisfy this requirement

•  Minimum 3 years of hands-on experience operating both Wire EDM and HP EDM machines in a production or precision manufacturing environment

•  Demonstrated ability to write and edit NC programs on EDM control systems (Wire and HP)

•  Proficiency reading engineering drawings with GD&T per ASME Y14.5 standards

•  Experience holding tolerances of ±0.0002" or tighter on EDM-machined parts

•  Experience with precision inspection equipment: micrometers, height gauges, CMM, and optical comparators

•  Ability to perform all secondary operations associated with EDM-produced parts (deburring, cleaning, rust prevention)

•  Physical ability to stand for extended periods, lift up to 50 lbs, and work in a manufacturing environment