Custom precision wire EDM cutting service in China
Delivering tight-tolerance, burr-free components through advanced wire electrical discharge machining. As a trusted custom CNC wire EDM cutting service in China, we turn complex drawings into repeatable, production-ready parts for industries that demand micron-level accuracy.
What is wire EDM and why choose it
Wire EDM uses a continuously traveling brass or zinc-coated wire as an electrode to erode electrically conductive material with spark discharges. Because the wire never touches the workpiece, there is no cutting force, no tool wear, and no mechanical stress — making it ideal for hardened steels, thin walls, sharp internal corners, and intricate profiles.
How the process works
A thin brass wire (typically 0.10 mm to 0.30 mm diameter) is threaded through a start hole or from the edge of the workpiece. Deionized water flushes the gap while controlled spark pulses vaporize tiny amounts of material. The wire follows a precisely programmed CNC path, cutting the desired 2D or tapered 3D profile with exceptional repeatability.
For through-hardened parts, wire EDM is performed after heat treatment, eliminating distortion that would occur with conventional milling. This preserves the hardness and dimensional stability of critical components.
Advantages over conventional machining
Wire EDM produces sharp internal corners as small as the wire radius plus spark gap — typically under 0.05 mm — which is impossible with end mills. It cuts any conductive material regardless of hardness, including tool steels at 60+ HRC, carbide, titanium, and exotic alloys, without the chatter or deflection seen in mechanical cutting.
Surfaces are smooth and burr-free, often requiring no secondary finishing. Thin-walled sections and fragile geometries remain intact because there is no contact force. For prototypes and low-volume runs, setup is fast and there is no dedicated tooling cost — a significant advantage for our custom CNC wire EDM cutting service in China.
Our wire EDM capabilities
Equipped with multi-axis CNC wire-cut machines and experienced programming engineers, we handle everything from simple blanking profiles to complex multi-stage die components and precision aerospace parts.
High-precision contour cutting
2-axis profile cutting with positional accuracy down to ±0.002 mm and surface roughness as fine as Ra 0.4 μm, suitable for die sets, gauges, and precision mechanical components.
Taper and 4-axis cutting
Simultaneous upper and lower wire guide control produces tapered surfaces, angled walls, and variable cross-sections up to ±30 degrees, ideal for extrusion dies, mold inserts, and draft-angle parts.
Micro and thin-walled parts
Using 0.10 mm fine wire, we cut micro-gears, thin slots, narrow webs, and fragile features with wall thicknesses below 0.15 mm without deformation or burrs.
Large workpiece capacity
Machines accommodate workpieces up to 600 × 400 × 300 mm and weights up to 500 kg, covering large die plates, mold bases, and structural components in a single setup.
Multi-cut finishing strategy
Rough cut followed by one to three skim passes removes the recast layer and heat-affected zone, delivering mirror-like surfaces and dimensional stability for high-wear and high-fatigue applications.
Batch and prototype production
From one-off prototypes and repair inserts to production runs of thousands of identical parts, our programming and fixturing systems ensure consistent quality and on-time delivery for every order.
Materials we routinely cut
Wire EDM works on any electrically conductive material, regardless of hardness. Below are the materials our custom CNC wire EDM cutting service in China processes most frequently.
Industries we serve
The versatility of wire EDM makes it indispensable across sectors where precision, hardness, and complex geometry converge.
Tool & die manufacturing
Blanking dies, bending dies, drawing dies, and progressive die components cut from hardened tool steel with sharp corners and zero-clearance mating surfaces.
Injection mold making
Mold inserts, core pins, ejector systems, and cavity details with fine textures and tapered shut-offs that cannot be produced by milling or grinding.
Aerospace & defense
Turbine disks, blade roots, honeycomb structures, and titanium fittings requiring tight tolerances, burr-free surfaces, and integrity in high-stress environments.
Automotive & motorsport
Transmission gears, synchronizer hubs, clutch plates, and engine components cut from hardened alloys with micron-level repeatability for high-volume production.
Medical & dental
Surgical instrument components, orthopedic implants, dental implant abutments, and micro-fluidic channels in biocompatible stainless steel and titanium.
Electronics & semiconductor
Lead frames, connector pins, heat sinks, and micro-machined electrodes with ultra-fine features and tight pitch requirements in copper and copper alloys.
How a typical wire EDM project flows
A structured workflow ensures every part — from drawing review to final inspection — meets the required tolerance and surface finish.
Drawing review & feasibility
Engineers review 2D drawings or 3D models for wire-accessible geometry, start-hole requirements, minimum corner radii, and taper feasibility before confirming the production plan.
Material preparation
Raw material is cut to size, heat-treated if required, and pre-machined to leave EDM allowance. Start holes are drilled or sinker-EDMed for internal features that cannot be cut from an edge.
CNC programming
CAM software generates the wire path with offset compensation, multiple cut passes, taper angles, and cutting conditions matched to material thickness and desired surface finish.
Machine setup & first cut
The workpiece is fixtured and aligned with an edge finder or touch-probe. The wire is threaded, and a trial cut on a scrap coupon verifies dimensions before the production run begins.
Roughing & finishing passes
A high-speed rough cut removes the bulk of material, followed by one or more skim passes at reduced power to refine geometry, eliminate the recast layer, and achieve the target surface roughness.
Inspection & delivery
Finished parts are checked with micrometers, height gauges, profile projectors, or CMM against the drawing. Deburring, cleaning, rust prevention, and protective packaging complete the process before shipment.
Technical specifications at a glance
Representative machine parameters and achievable tolerances for our custom CNC wire EDM cutting service in China. Actual values depend on material, thickness, and part geometry.
Wire EDM machined products
A selection of representative parts produced by our custom CNC wire EDM cutting service in China. Each component is manufactured to customer drawings with tight tolerances and burr-free surfaces.
Why customers choose our wire EDM service
Combining advanced equipment, experienced engineers, and a disciplined quality process, we deliver precision parts that perform in the most demanding applications.
Micron-level consistency
Every machine is calibrated regularly, and first-article inspection plus in-process sampling ensure that dimensions stay within tolerance from the first part to the last.
Hardened-material expertise
We routinely cut tool steels above 60 HRC and carbide without deflection or tool wear, preserving the hardness and wear resistance that conventional machining cannot match.
Complex geometry capability
Sharp internal corners, thin walls, tapers, and multi-contour profiles are handled with 4-axis programming and fine-wire technology — geometries that are impractical or impossible to mill.
Fast turnaround for prototypes
No dedicated cutting tool is needed, so setup is quick. For prototypes and short runs, we can often begin cutting within days of drawing approval, accelerating your product development cycle.
Cost-effective production
Competitive pricing from our China manufacturing base, combined with high material utilization and minimal secondary finishing, makes wire EDM an economical choice for both simple and complex parts.
Drawing-driven manufacturing
We work directly from your 2D drawings or 3D models. Every dimension, tolerance, and surface requirement is reviewed and confirmed before production, so the parts match your design intent.
Precision wire EDM parts, manufactured to your drawing
Whether you need a single prototype insert or a production batch of hardened components, our custom CNC wire EDM cutting service in China delivers the accuracy, surface quality, and repeatability your project requires. Send us your drawings and let our engineering team turn them into precision-machined parts.