Precision Wire EDM Cutting Service in China
High-accuracy Wire EDM machining for tooling components, mold inserts, punch dies, hardened steel parts and tight-tolerance OEM metal components.
When Should You Use Wire EDM?
Wire EDM is ideal when conventional CNC machining services cannot achieve the required profile accuracy, sharp corners, material hardness or thin-wall stability. Because the process cuts with electrical discharge instead of mechanical force, it is suitable for complex profiles, hardened materials and delicate precision features.
Complex Profiles
For intricate 2D profiles, narrow slots, thin features and irregular contours.
Sharp Internal Corners
For tooling, die inserts and features where milling cutter radius is not acceptable.
Hardened Steel
For heat-treated tool steel, hardened steel, carbide and conductive hard materials.
Tight-Tolerance Parts
For components requiring stable dimensional accuracy and controlled inspection.
Wire EDM Cutting for High-Precision Metal Components
Ningbo Feiyu provides precision Wire EDM cutting services for OEM customers that require accurate profiles, fine details, tight-tolerance features and stable batch consistency. Our Wire EDM capability is commonly used for mold inserts, punch and die components, tooling plates, hardened steel parts and precision industrial components.
Wire EDM uses a thin electrically charged wire to cut conductive materials along a programmed path. The process produces accurate profiles without direct mechanical cutting force, making it suitable for hardened steel, delicate features and complex geometries.
Wire EDM Capability Snapshot
| Process | Wire EDM / EDM Wire Cutting |
|---|---|
| Materials | Tool steel, stainless steel, carbon steel, aluminum, carbide, hardened steel |
| Typical Parts | Mold inserts, punch dies, tooling plates, precision OEM parts |
| Geometry | Complex profiles, sharp internal corners, narrow slots, fine details |
| Tolerance | Drawing-based tolerance review; tight tolerance available depending on material and geometry |
| Production | Prototype, small batch, repeat OEM production |
| File Formats | STEP, STP, DXF, DWG, PDF |
| Inspection | First article inspection, dimensional inspection, CMM inspection when required |
Typical Wire EDM Parts We Manufacture
Mold Inserts
Precision EDM cutting for mold components with complex profiles and fine details.
Punch & Die Components
Accurate cutting for stamping tools, punches, dies and tooling plates.
Hardened Steel Components
Wire EDM machining for heat-treated or hardened materials after CNC machining or heat treatment.
Precision OEM Parts
Custom high-accuracy metal parts for industrial equipment, automation and machinery.
Tooling Plates
Flat or profile-cut tooling plates requiring accurate slots, holes and contours.
Carbide Components
Wire EDM cutting for conductive hard materials where conventional machining causes tool wear.
Materials Suitable for Wire EDM
Wire EDM can process electrically conductive materials, especially hard metals that are difficult to machine with conventional cutting tools.
| Material | Typical Application |
|---|---|
| Tool Steel | Punches, dies, tooling inserts |
| Hardened Steel | Heat-treated precision components |
| Stainless Steel | Corrosion-resistant precision parts |
| Carbon Steel | Industrial plates and structural components |
| Carbide | Wear-resistant tooling parts |
| Aluminum | Lightweight precision parts |
| Copper | Electrical and conductive components |
Wire EDM vs CNC Milling: When EDM Is the Better Choice
| Requirement | Wire EDM | CNC Milling |
|---|---|---|
| Hardened steel | Excellent | Tool wear can be high |
| Sharp internal corners | Strong advantage | Limited by cutter radius |
| Thin or delicate features | Low mechanical stress | Risk of deformation |
| Complex 2D profiles | Excellent | May require multiple tools |
| Bulk material removal | Slower | Faster |
| 3D pocket machining | Limited | Better choice |
Wire EDM does not replace CNC milling service. It complements CNC machining when parts require hardened material cutting, sharp profiles, fine details or difficult internal features. Feiyu can also combine Wire EDM with CNC turning service and Sinker EDM machining when a part requires multiple operations.
Engineering Support for Wire EDM Projects
Before production, our engineering team reviews drawings, materials, thickness, tolerances, cutting path, start holes, surface finish expectations and inspection requirements.
CAD Drawing Review
We review 2D and 3D files before quotation and production.
DFM Suggestions
We provide manufacturability feedback to improve cost, accuracy and production stability.
Tolerance Evaluation
We identify which features require Wire EDM and which can be completed by CNC machining.
Prototype Support
Prototype and small-batch production can be supported before mass production.
Integrated Machining Route for Wire EDM Parts
Many Wire EDM parts require multiple manufacturing steps. Feiyu can combine CNC machining, heat treatment, Wire EDM, surface treatment and final inspection in one production workflow.
Quality Control for Wire EDM Cutting
Wire EDM parts are often used in tooling, molds and high-precision assemblies, so dimensional control is critical. Feiyu supports first article inspection, in-process inspection, final dimensional inspection and inspection reports according to customer requirements. Learn more about our quality control system.
Industries Using Wire EDM Parts
Mold & Tooling
For mold inserts, die plates, punches and tooling components.
Industrial Equipment
For precision machine components and high-accuracy replacement parts.
Automotive Components
For tooling parts, fixtures and precision metal components.
Medical Device Components
For small, precise and complex conductive metal components.
Aerospace Components
For hard materials, complex profiles and low-distortion cutting needs.
Automation Equipment
For custom fixtures, plates, tooling and machine components.
Wire EDM Project Examples
Stamping Die Insert
- Material
- Tool Steel
- Process
- CNC Machining + Heat Treatment + Wire EDM
- Challenge
- Sharp internal profile and tight clearance
- Result
- Stable profile accuracy after heat treatment
Hardened Steel Punch
- Material
- Hardened Steel
- Process
- Wire EDM Cutting
- Challenge
- Hard material and fine profile details
- Result
- Accurate cutting without excessive tool wear
Precision Tooling Plate
- Material
- Stainless Steel
- Process
- CNC Machining + Wire EDM
- Challenge
- Multiple narrow slots and profile tolerance
- Result
- Consistent fit for assembly use
Wire EDM Cutting FAQ
Questions are grouped by buyer decision flow: first confirm whether Wire EDM fits the part, then review material and tolerance requirements, then prepare files for quotation and production.
When EDM Is the Right Route
What is Wire EDM cutting used for?+
Wire EDM cutting is used for accurate profiles, narrow slots, sharp internal corners, die components, mold inserts, tooling plates, hardened steel parts and custom Wire EDM parts that require low cutting force.
When should I choose Wire EDM instead of CNC milling?+
Choose Wire EDM when the part needs sharp internal corners, complex 2D profiles, hardened material cutting, thin features or profile accuracy that is difficult for milling cutters.
Can Wire EDM create sharp internal corners?+
Wire EDM can create much sharper internal profiles than many milling operations, although the minimum corner radius depends on wire diameter, material, thickness and drawing requirements.
What Feiyu Can Review
What materials can be cut by Wire EDM?+
Wire EDM can cut conductive materials such as tool steel, hardened steel, stainless steel, carbon steel, aluminum, copper and carbide.
Can Wire EDM cut hardened steel?+
Yes. Wire EDM for hardened steel is one of the main use cases because the electrical discharge process cuts hard conductive materials without conventional tool wear.
What tolerance can Wire EDM achieve?+
Tolerance is reviewed from the drawing and depends on material, thickness, geometry and inspection method. Tight tolerance is available for suitable Wire EDM machining projects.
How to Start the Project
What files do you need for quotation?+
Please send STEP, STP, DXF, DWG or PDF files, plus material grade, thickness, key tolerances, quantity, surface finish and inspection requirements.
Do you support prototype and small-batch Wire EDM projects?+
Yes. Feiyu can support prototype, small batch and repeat OEM production after engineering review.
Can you combine Wire EDM with CNC machining and surface finishing?+
Yes. Feiyu can combine CNC machining, heat treatment, Wire EDM, surface finishing and final inspection in one manufacturing route.
Do you provide inspection reports?+
Yes. Inspection reports, first article inspection and CMM inspection can be provided according to project and customer requirements.
Send Your Wire EDM Drawings for Review
Upload your 2D drawings, 3D files, material grade, thickness, critical tolerances, quantity and inspection requirements. Our engineering team will review your project and recommend the most suitable machining route.