EDM and Wire EDM Services
Our EDM service can process complex shapes in hard materials with high precision and efficiency, providing a flexible and precise production solution for custom parts.
Our EDM Capabilities
EDM
Relying on precise electrical discharge machining to manufacture precision parts with features that are difficult for CNC machining, such as sharp corners, thin walls, deep grooves, and narrow cavities
Wire EDM
WEDM can efficiently and accurately machining parts with hard materials and thorough structures such as elongated holes, deep cavities, and narrow slits.
Advantages of EDM and Wire EDM
EDM and Wire EDM offer unique benefits for high precision, intricate designs, and tough materials. Top six advantages of each:
Exceptional Precision and Accuracy
EDM and Wire EDM provide unmatched precision for complex geometries and tight tolerances, often within a few microns.
Ability to Machine Hard Materials
They are ideal for hard materials like tool steels, titanium, carbide, and hardened alloys, perfect for aerospace, automotive, and medical industries.
Complex Geometries and Intricate Features
Both excel at complex shapes, sharp edges, and intricate features, including internal cavities, undercuts, and fine holes. Wire EDM is great for narrow slots and precise contours, while EDM is ideal for 3D shapes with tight tolerances.
No Mechanical Stress on Workpieces
EDM and Wire EDM eliminate the risk of distortion, warping, or tool wear, valuable for delicate or thin-walled components.
Minimal Heat-Affected Zone
They generate minimal heat, keeping the heat-affected zone to a minimum, preventing material deformation and preserving workpiece quality, even with heat-sensitive materials.
High Flexibility in Materials and Shapes
EDM and Wire EDM are versatile with a wide range of materials, suitable for simple parts and highly complex, customized components, ideal for prototyping and low-volume production. This list highlights the key strengths of EDM and Wire EDM, showcasing their value across various industries and applications.
Electrical Discharge Machining Tolerances
| Feature | Standard Tolerance | Tightest Achievable |
| Linear Dimensions | ±0.01 mm (±0.0004″) | ±0.005 mm (±0.0002″) |
| Hole Diameter | ±0.015 mm (±0.0006″) | ±0.008 mm (±0.0003″) |
| Slot Width | ±0.02 mm (±0.0008″) | ±0.01 mm (±0.0004″) |
| Edge Radius / Corner | R0.2 mm typical | R0.1 mm possible |
| Surface Finish (Ra) | 1.2-3.2 µm | Down to 0.8 µm with polishing |
| Standards Applied | ISO 2768-m / ISO 2768-f | ISO 286, DIN ISO 1302 etc. |
Wire EDM Tolerances
| Feature | Standard Tolerance | Tightest Achievable |
| Linear Dimensions | ±0.005 mm (±0.0002″) | ±0.002 mm (±0.00008″) |
| Hole/Opening Diameter | ±0.006 mm (±0.00024″) | ±0.0025 mm (±0.0001″) |
| Slot Width | ±0.008 mm (±0.0003″) | ±0.003 mm (±0.00012″) |
| Min. Corner Radius | R0.05-0.1 mm typical | Down to R0.02 mm |
| Surface Finish (Ra) | 0.6-1.6 µm | As low as 0.2 µm (multi-pass) |
| Standards Applied | ISO 2768-f, GB/T 1804-2000 | ISO 1302 for surface finish |
| Feature | Standard Tolerance | Tightest Achievable |
| Linear Dimensions | ±0.01 mm (±0.0004″) | ±0.005 mm (±0.0002″) |
| Hole/Opening Diameter | ±0.012 mm (±0.0005″) | ±0.006 mm (±0.00024″) |
| Slot Width | ±0.015 mm (±0.0006″) | ±0.007 mm (±0.00028″) |
| Min. Corner Radius | R0.1-0.2 mm | – |
| Surface Finish (Ra) | 1.2-2.5 µm | ~1.0 µm with secondary pass |
| Standards Applied | Cost-effective fine cutting | Tooling, jigs, semi-precision |
| Feature | Standard Tolerance | Tightest Achievable |
| Linear Dimensions | ±0.02 mm (±0.0008″) | ±0.01 mm (±0.0004″) |
| Hole/Opening Diameter | ±0.03 mm (±0.0012″) | ±0.015 mm (±0.0006″) |
| Slot Width | ±0.03 mm (±0.0012″) | ±0.015 mm (±0.0006″) |
| Min. Corner Radius | R0.2-0.3 mm | – |
| Surface Finish (Ra) | 2.0-3.2 µm | – |
| Standards Applied | Fast prototyping, low-cost | General cutting, mold blanks |
Industries Served by EDM and Wire EDM
FastPreci’s EDM and Wire EDM services deliver precision contours, tight gaps, and fine features on hard and complex materials. Ideal for parts with thin walls, deep cavities, or tight tolerances, EDM & Wire EDM support prototype and production workflows across advanced engineering sectors.
Robotics
Robotic systems necessitate the use of complex geometries and components that are both lightweight and robust. Wire Electrical Discharge Machining (EDM) is particularly well-suited for the creation of structural parts requiring tight tolerances, whereas conventional EDM excels in producing deep internal features.
Key Applications:
End effectors, Joint components, Miniature gears, Custom inserts, Gripper jaws
Benefits:
- Fine detail machining with minimal thermal deformation
- Tight kerf control for high part density and compact assembly
- Seamless integration with composite or hybrid structures
Medical Devices
Medical device manufacturing often demands intricate geometries, controlled surface integrity, and consistent tolerances for critical assemblies. EDM and Wire EDM are well-suited for producing complex medical components where precision and repeatability are essential.
Key Applications:
Surgical tools, Implant fixtures, Micro cutters, Catheter ports, Connector plates
Benefits:
- Micro-scale accuracy down to ±0.002 mm
- Smooth surface finishes suitable for sterilization and skin contact
- No mechanical load, ideal for fragile or delicate materials
Aerospace
Aerospace components frequently involve hard alloys, thin sections, and complex shapes that must meet strict performance and safety requirements. EDM enables precise machining of these features while maintaining material integrity and dimensional accuracy.
Key Applications:
Turbine inserts, Fixture components, Structural slots, Precision contours
Benefits:
Accurate features in heat-resistant and hardened alloys
Deep slots and sharp internal corners with minimal stress
Stable precision for safety-critical aerospace components
Electronics
Electronic components often require micro-features, narrow gaps, and detailed internal shapes for connectors, contacts, and shielding parts. Wire EDM provides the precision needed to achieve these features without introducing mechanical stress.
Key Applications:
Shielding brackets, Heat sinks, Microframes, Connector slots, Contact plates
Benefits:
- Burr-free edges for high assembly efficiency
- Capable of machining thin, conductive sheets and alloys
- High repeatability for mass customization
Automation
Automation systems often rely on precision components with tight tolerances, deep slots, and complex internal features. EDM and Wire EDM allow these parts to be produced accurately without tool deflection or material distortion, ensuring reliable motion and long-term stability in automated equipment.
Key Applications:
Forming dies, Sensor slots, Wear-resistant guides, Precision clamps, Locator pins
Benefits:
- Extreme dimensional accuracy for motion-critical systems
- No mechanical stress, ensuring long-term part stability
- Ideal for low-friction components in repetitive operations
Renewable Energy
Renewable energy systems use precision components in turbines, power transmission, and electrical systems where durability and accuracy are critical. EDM supports the machining of complex geometries and hard materials used in clean energy applications.
Key Applications:
Battery connectors, Fuel cell plates, Thermal interfaces, High-voltage insulators, Spacer inserts
Benefits:
- Suitable for high-conductivity and high-temperature alloys
- Enables narrow slotting and deep cuts without distortion
- Supports prototyping and iteration for R&D needs
Semiconductor
Semiconductor equipment requires extremely precise components with tight clearances, smooth internal features, and stable geometries. EDM and Wire EDM are widely used to produce parts that meet the accuracy and cleanliness requirements of semiconductor manufacturing.
Key Applications:
Vacuum plates, Guide pins, Slit components, Alignment features
Benefits:
Micro-features down to tight radii and narrow gaps
Controlled clearances for vacuum and motion assemblies
Stable geometry for high-precision equipment alignment
Automotive
Automotive manufacturing often involves precision tooling and functional components with complex profiles and tight tolerances. EDM processes enable accurate production of these parts, especially where conventional machining reaches its limits.
Key Applications:
Gear profiles, Sensor mounts, Die inserts, Interface plates
Benefits:
Accurate complex profiles for tooling and functional parts
Consistent tolerances in hardened materials
Reliable repeatability for prototype and low-volume builds
Why Choose FastPreci
Fast
Lead time as fast as 3 days, accelerating your R&D and production progress, easily meet tight deadlines.
Precision
Tolerances as tight as 0.005mm, rich experience with advanced 5-axis CNC machines, mill-turn machines, and precision grinding machines, meets a variety of tolerance requirements.
Cost-effective
According to your functionality and quantity requirements, develop the optimal manufacturing process, combined with efficient self-owned factories to achieve optimal performance and cost.
One-stop Solution
From CNC machining to aluminum extrusion and heat treatment to surface finishing, from prototyping to mass production, easily and efficiently customize various parts.
Strict Quality Control
ISO 9001 quality management system certification, equipped with various quality inspection instruments including Zeiss coordinate, process and results can be controlled.
Dedicated Service
A dedicated account manager is available to provide fast response, individualized service, full support, and easy management of complex projects.
Electrical Discharge Machining Resources
