Electro-Chemical Machining or ECM is a rapid, cost-effective, stress-free machining process that produces a high-quality finish. It is specifically well suited for removing material in complicated geometry by anodic dissolution from hard to conventionally machined materials. BN is one of the few companies in the world that use this process and has utilized this process for over 40 years to manufacture turbine blades, turbine nozzles, and internal complex shapes for aerospace, defense, cryogenic, and advanced energy industries.