When working with hardened metals or intricate molds, **[EDM roughing](https://rollyu.com/what-is-electrical-discharge-machining-a-complete-guide-to-how-it-works/)** has become my go-to technique. It removes bulk material quickly using controlled electrical sparks, leaving a rough surface ready for finishing passes. I rely on EDM roughing to access deep cavities, sharp internal corners, and complex geometries that conventional machining can’t handle. By using proper electrode design, high-energy pulses, and effective flushing, I can achieve faster production without risking part deformation. For anyone dealing with tough materials or precision components, EDM roughing is a game-changer in modern machining workflows.