EDM

An Effective Option Delivering Tremendous Precision on Parts Made of Electrically Conductive Material

EDM for Hard Metals

3Diligent provides electrical discharge machining for hard metals or those that would be very difficult to machine with other rapid-manufacturing techniques. 3Diligent also offers materials that are electrically conductive, although methods have also been proposed for using EDM to machine insulating ceramics.

EDM Overview

Electro-Discharge Machining (EDM) reigns in the realm of high-accuracy projects. Also known as spark machining, spark eroding, die sinking, wire burning, or wire erosion, this process causes metal erosion through electrical discharge to achieve fine results. EDM typically finds use in highly intricate parts or instances that remove support material on metal 3D printed parts.

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3Diligent has supported hundreds of companies in providing digital-manufacturing solutions for their most challenging project needs.

If you're interested in experiencing the power of our digital-manufacturing solutions firsthand, submit an RFQ through our secure portal or send an email detailing a few of the specifics of your project and we'll be in touch.

EDM Process at a Glance

Branded Processes Also Known As
Wire EDM
Sinker EDM
  • Standard Tolerance
    0.001"
  • Stock Surface Finish
    ~64 μin
  • Lead Time
    Dependent on the surface area
  • Maximum Size
    Up to 1000 mm (41 inches)
  • Tightest Internal Corner Radius
    ~0.008"
  • Minimum Wall Thickness
    ~1/32" | 0.794mm
Advantages
Highly Accurate. Tolerances as low at 0.001".
Cost-Effective. Fast processing, turnaround, and less waste.
No Direct Contact Between Workpiece and Tool. Minimal residual stresses.
Versatile. Multi-axis cutting allows for highly complex geometries.
No burrs.
Limitations
Sharp Corners Difficult. Due to the electrode wear on the part.
Conductive materials only. The EDM machine burns out openings in a shovel of the turbine of the aviation engine.
Operator uses an EDM electrode to make precision mold and die.
Example Machines
Mitsubishi Wire EDM BA24

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