CNC Machining and EDM Processes

In the competitive landscape of precision part manufacturing, mastering advanced processes is key to delivering superior quality and complex components. For businesses seeking a reliable, onestop solution for custom parts, understanding the synergy between CNC Machining and Electrical Discharge Machining (EDM) is crucial. These two technologies, while distinct, complement each other perfectly to overcome manufacturing challenges that neither could handle alone.


cnc machining center
CNC (Computer Numerical Control) Machining is the backbone of modern subtractive manufacturing. It involves using computercontrolled machine tools, such as mills, lathes, and routers, to remove material from a solid block (or billet) to create a part with high dimensional accuracy. Known for its speed, versatility, and excellent surface finishes, CNC machining is ideal for producing parts with complex geometries from a vast range of materials, including metals like aluminum and stainless steel, and various plastics. It is the goto process for the majority of prototyping and production runs.

However, when designs include intricate internal features, sharp corners, or require machining of exceptionally hard materials, CNC tools can reach their limits. This is where EDM comes into play. EDM, particularly the wire and sinker (ram) variants, uses controlled electrical sparks to erode material into the desired shape. A wire EDM machine can cut through hardened tool steel with extreme precision, creating intricate profiles and delicate features without inducing mechanical stress. Sinker EDM is perfect for creating complex cavities, molds, and textured surfaces that would be impossible with a cutting tool.

The true power for your projects lies in the integrated application of both processes. A part might be roughed out and have its primary features created efficiently on a CNC machine. It can then be hardened through heat treatment. Finally, EDM is employed to add the final, delicate details or to machine the nowhardened material without damaging cutting tools. This hybrid approach ensures the highest possible accuracy, material integrity, and design flexibility.

As your onestop CNC machining partner, we leverage this powerful combination to your advantage. We provide comprehensive solutions—from design for manufacturability (DFM) advice to final inspection—ensuring that every component, whether simple or extraordinarily complex, is produced with optimal efficiency and uncompromising quality. By integrating CNC and EDM capabilities, we empower your innovations, reduce lead times, and deliver robust parts that drive your business growth in the global market.