Discover the key differences between CNC milling and EDM. Learn which process offers better speed, precision, and material compatibility for your specific project.

Deciding between EDM and traditional CNC? Uncover the key differences in precision, materials, and complexity to choose the most effective process for your parts.

Electrical Discharge Machining (EDM) enables precision machining of conductive materials regardless of hardness. Three distinct technologies dominate industrial applications:

• Sinker EDM: Uses custom-shaped electrodes to create 3D cavities (±0.01mm accuracy; ideal for mold cores and turbine blades)

• Wire EDM: Employs continuously moving wire for 2D/tapered cuts (±0.001mm precision; optimal for tooling and medical instruments)

• Micro EDM: Utilizes rotating micro-electrodes (Ø0.03–0.3mm) for features down to 5μm (critical for fuel injectors and medical implants)
  Key differentiators include electrode configuration, dimensional capabilities, and surface finish requirements (Ra 0.05–0.2μm).