High-Precision Sinker EDM Services
Shixinproto master complex geometries in hard metals for molds, cavities, and critical components. Leverage our ISO-certified expertise, rapid turnaround, and dedicated engineering support.
ISO 9001:2015 Certified ±0.001mm Precision
What Is Sinker EDM?
Sinker EDM (also known as Cavity EDM or Ram EDM) is a type of Electrical Discharge Machining (EDM) process. It removes metal material by creating controlled electrical sparks between a custom-shaped electrode (usually copper or graphite) and the workpiece, which are submerged in a dielectric fluid.
Unlike Wire EDM, which cuts completely through material, Sinker EDM forms complex cavities, deep slots, and fine details by eroding the metal surface according to the electrode’s shape. It is widely used in mold making, precision machining, and hard metal processing.
Years Experience
Projects Done
Client Satisfaction
Our Die Sinking EDM Capabilities
Advanced sinker edm machine and skilled technicians enable us to handle the most demanding sinker EDM projects.
Material Compatibility
Technical Specifications
| Parameter | Capability |
|---|---|
| Accuracy Tolerance | ±0.001mm (0.00004") |
| Surface Finish (Ra) | 0.1 - 3.2 μm |
| Maximum Workpiece Size | 1000mm × 800mm × 600mm |
| Maximum Electrode Size | 800mm × 600mm × 500mm |
| Minimum Cavity Diameter | 0.1mm |
| Maximum Depth of Cut | 300mm |
Target Industries & Applications
Mold & Die Making
Custom die sinking EDM for injection molds, die casting molds, stamping dies, and mold inserts with complex cavities and textures.
Aerospace
Precision sinker EDM for turbine blades, cooling channels, fuel system components, and other high-temperature alloy parts.
Automotive
Ram EDM machining for engine components, transmission parts, fuel injectors, and custom automotive tooling.
Medical Devices
High-precision EDM sinking for surgical instruments, orthopedic implants, dental tools, and micro-medical components.
Electronics
Sinker EDM services for micro-connectors, semiconductor parts, sensor components, and precision electronic housings.
General Engineering
Custom die sinking EDM for industrial machinery parts, valves, gears, and other components requiring complex geometries.
Why Choose Us Sinker EDM Services
Our Sinker EDM Machining Process
Transparent, efficient, and quality-focused—we guide your project from concept to delivery with clear communication.
Consultation
Share your design (CAD files) and requirements—we provide engineering feedback and a detailed quote.
Design Optimization
Our team optimizes your design for sinker EDM efficiency, reducing costs and improving quality.
Electrode Fabrication
We manufacture custom electrodes (graphite/copper) tailored to your part’s geometry.
EDM Machining
Precision die sinking EDM process with real-time monitoring to ensure accuracy.
Quality Inspection
Advanced CMM and optical measurement to verify dimensions and surface finish.
Delivery
Secure packaging and on-time shipping to your location—global distribution available.
Frequently Asked Questions
Answers to common questions about our sinker EDM machining services,Contact us for further assistance!
What is the difference between sinker EDM and ram EDM?
Sinker EDM and ram EDM are synonymous terms. Both refer to the same die sinking EDM process where a custom-shaped electrode is “sunk” into the workpiece to create complex cavities. The term “ram EDM” comes from the machine’s ram (vertical spindle) that holds and moves the electrode.
Can you handle large-scale production with sinker EDM?
Yes! We specialize in both prototype and high-volume sinker EDM production. Our advanced equipment and automated processes allow us to handle orders from 1 to 10,000+ parts with consistent quality. We offer volume discounts for large orders and can scale production to meet your manufacturing needs.
What CAD file formats do you accept for sinker EDM machining?
We accept all standard CAD file formats, including STEP (.step, .stp), IGES (.iges, .igs), STL (.stl), DWG (.dwg), DXF (.dxf), and PDF (.pdf) for 2D drawings. For optimal results, we recommend STEP or IGES files as they preserve 3D geometry across different CAD software.
What is the typical lead time for sinker EDM projects?
Lead time depends on project complexity, quantity, and electrode fabrication requirements. For prototypes or small batches, lead time is 3-7 business days. For high-volume production or complex parts, lead time is 7-14 business days. Urgent projects are available with expedited processing (24-48 hour turnaround for simple parts).
How do you ensure quality control for sinker EDM parts?
Our quality control process covers every stage:
Design Review before machining
Real-Time Monitoring during EDM
Final Verification using CMM and surface testers
Full Documentation with Certificates of Conformance
ISO 9001:2015 & AS9100 Certified
Get a quote now
Get Your Custom Sinker EDM Quote Today?
Submit your project details, and our team will provide a competitive quote within 24 hours. We support CAD file formats (STEP, IGES, STL, DWG) and offer free design consultations.
No obligation quote
Free design optimization
24-hour response time
Volume discounts available
