What Is EDM Machining?
EDM (Electrical Discharge Machining) is a special precision machining process that removes metal material via high-frequency electric spark erosion between electrode and workpiece. Different from traditional contact cutting, it features no mechanical cutting force, enabling precise processing of ultra-hard metals, sharp corners, narrow slits, tiny holes and intricate deep-cavity structures. It is widely applied in mold manufacturing, precision automation, medical and aerospace industries for high-precision prototype and batch production.
Our EDM Tolerances
Dimensional tolerance as per customer drawings; surface roughness, diameter accuracy and thread accuracy customizable per project requirements.
Our Precision EDM Machining Capabilities
Our professional EDM machining service delivers ultra-precision processing for all conductive metal materials. We cover wire cut EDM and sinker EDM processes, supporting micro slit machining, tiny hole drilling and complex cavity forming to provide reliable one-stop precision manufacturing solutions.
Wire Cut EDM
High-precision wire cutting for thin slits, narrow grooves, complex contours and punch parts. Ensures ultra-smooth cutting surfaces and consistent dimensional accuracy for precision mold and stamping components.
Sinker EDM
Spark erosion forming for complex deep cavities, sharp corners and irregular recessed structures. Ideal for machining intricate mold cores and special-shaped structural parts that are difficult for conventional milling.
Micro Hole Drilling EDM
Ultra-fine tiny hole machining with high positioning accuracy, capable of processing micro deep holes and special-shaped holes on hard metal surfaces for precision instrument and fluid control parts.
Slit & Groove EDM Machining
Precision processing of ultra-narrow slits and thin-wall grooves with uniform width and no burrs, suitable for precision sealing, clamping and gap matching structural components.
Why Choose Our Machining Services?
We focus on high-precision non-standard machining, stable quality and timely support to satisfy your component demands.
Custom Non-Standard Machining
Support custom non-standard parts in metallic & non-metallic materials, produced per your drawings.
Strict Quality Assurance
Precise tolerance control and full inspection guarantee stable product quality.
Flexible Lead-Time Arrangement
Flexible orders and quick response to match your project timeline.
Precision EDM Parts We Manufacture
We specialize in custom precision EDM machined components. Suitable for hard-to-cut metals and intricate geometries unachievable by conventional cutting, our parts comply with strict drawing requirements for precision-critical applications.
Mold Inserts & Mold Cores
High-precision custom mold cores and inserts with sharp corners, deep cavities and tiny features, widely used for plastic molds and stamping dies.
Precision Punch & Die Parts
Ultra-precision punch pins and die blades processed by wire cut EDM, featuring high wear resistance and high dimensional stability for stamping and forming equipment.
Micro Hole Component Parts
Custom micro deep-hole parts and precision orifice components for medical devices, precision instruments and hydraulic control systems.
Thin-Wall & Narrow-Slit Parts
Burr-free thin-wall structural parts and ultra-narrow slit components with zero deformation, meeting ultra-high precision assembly standards.
Special-Shaped Precision Components
Complex irregular parts and special-shaped structural components that cannot be processed by traditional machining, customized for high-end industrial equipment.
Precision Tooling & Jig Parts
High-precision custom tooling, positioning jigs and detection tool components with tiny features and strict tolerance requirements.
Materials for EDM Machining
EDM machining is applicable to all conductive metal materials. Our commonly processed materials include: tungsten steel, hardened steel, stainless steel, copper, brass, aluminum alloy and titanium alloy. The non-contact spark erosion processing perfectly solves the machining difficulty of ultra-hard and difficult-to-cut metals.
Tungsten Steel
Tungsten steel delivers extreme hardness, superior wear resistance and high compressive strength. EDM is ideal for manufacturing ultra-precision mold inserts, wear-resistant tooling and micro structural parts with stable dimensional accuracy for high-load industrial applications.
Hardened Steel
Heat-treated hardened steel features high rigidity and deformation resistance. EDM eliminates mechanical cutting stress, enabling precise machining of complex cavities, sharp corners and fine features for mold cores, die components and precision mechanical parts.
Stainless Steel
Stainless steel provides excellent corrosion resistance and mechanical stability. Our EDM process accurately produces micro holes, narrow slits and intricate profiles, suitable for medical, food-grade, marine and fluid system precision components.
Copper
Copper features outstanding electrical and thermal conductivity. Precision EDM machining achieves fine and burr-free features for conductive terminals, electrical contact parts and thermal management components used in electronic and industrial equipment.
Brass
Brass offers stable electrical performance and excellent EDM machinability. It is widely processed into high-precision sensor parts, instrument components and miniature conductive fittings with tight tolerance and smooth surface finish.
Aluminum Alloy
Aluminum alloy is lightweight with good thermal conductivity. EDM efficiently processes thin-wall structures, special-shaped profiles and micro holes, ideal for automation fixtures, aerospace parts and semiconductor equipment components.
How Our Machining Service Works
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Upload Drawings
Send 2D drawings, 3D CAD files and your project requirements.
DFM & Quotation
Engineering review, process suggestions, lead time and pricing.
Production & QC
Machining, in-process inspection, finishing and final quality checks.
Delivery
Secure packing, documentation and shipment to your destination.
Frequently Asked Questions
Here you can find answers to frequently asked questions about custom CNC & EDM machining, material options, tolerances, quotation and delivery. Our team is ready to assist with any extra concerns.
Our Precision EDM Service supports precision wire EDM and sinker EDM for complex profiles, tight-tolerance features, narrow slots, deep cavities, and hardened components. Process selection is based on part geometry, material, dimensional requirements, and production volume.
EDM is suitable for electrically conductive materials, including hardened tool steel, stainless steel, alloy steel, carbide, copper, and aluminum. Because material hardness has less impact on machinability, EDM is particularly effective for heat-treated components and difficult-to-cut alloys.
Precision EDM can provide micron-level dimensional and positional accuracy on suitable components. Actual capability depends on material, thickness, geometry, thermal stability, electrode or wire conditions, and inspection requirements. Critical tolerances are reviewed directly from the engineering drawing.
EDM can produce intricate contours, narrow slots, small openings, sharp internal features, deep cavities, and complex profiles that may be difficult to achieve with conventional cutting. Multi-pass machining can be used where tighter accuracy and improved surface quality are required.
Yes. We support prototypes, low-volume production, and repeat mass production. Process parameters and inspection methods can be standardized for consistent results across larger production runs.
EDM can achieve controlled surface finishes through optimized cutting parameters and multiple passes. Additional processes such as polishing, grinding, lapping, honing, and deburring can be incorporated when the final application requires specific surface or dimensional characteristics.
MOQ and lead time depend on material, part complexity, thickness, tolerance requirements, quantity, tooling, and inspection specifications. Both prototype quantities and production orders can be accommodated, with delivery schedules confirmed after technical review.
Provide your 2D drawing or 3D model, material grade and hardness, part thickness, critical tolerances, quantity, surface-finish requirements, and inspection criteria. Our engineering team can evaluate EDM feasibility and recommend the most suitable process and manufacturing strategy.
