EDM
Precision Sinker EDM
Complex internal features, precision cavities, and sharp details in hardened materials. When the geometry is too tight for milling, sinker EDM delivers.
±.0001"
Typical Tolerance
Near-Mirror
Surface Finish
23.6" × 16.5" × 14.5"
Max Work Envelope
Proto → Production
Volume Range
WHAT WE DO
Engineering-Driven Edm Partner
Carbide Products' sinker EDM services produce complex internal geometries, detailed cavities, and tight-tolerance features that conventional machining simply can't achieve. Using controlled erosion and precision electrode manufacturing, we deliver sharp corners, intricate detail, and ±.0001" accuracy — even in fully hardened materials.
Engineering Partnership
Our sinker EDM capabilities are fully integrated with CNC machining, wire EDM, grinding, and brazing. We collaborate with customer engineering teams to develop electrode strategies, plan manufacturing sequences, and ensure critical dimensional relationships are maintained from raw stock through finished component — all under one roof.
Talk to an EngineerCapabilities Include
- ✓Complex cavity creation
- ✓Sharp internal corner features
- ✓Precision slotting and pocketing
- ✓Fine detail and intricate geometry
- ✓Machining hardened materials without distortion
- ✓Multi-burn finishing for superior accuracy
- ✓Electrode design and manufacturing in-house
Technical Reference
Applications, Materials & Equipment
What We Make
Common Applications
- Tooling and die components
- Micro hole making
- Carbide wear components
- Precision cavities and pockets
- Fastener and extrusion tooling
- Custom OEM precision parts
What We Run
Materials We Machine
- Carbide & carbide composites
- Hardened tool steels
- Alloy steels
- Stainless steels
- High-performance aerospace alloys
- Copper & conductive alloys
How We Do It
Equipment
- Sodick sinker EDM
- Agie Charmilles sinker EDM
- Amstech sinker EDM
- Aero lap for fine finishing
Have Questions?
Frequently Asked Questions
What is the advantage of sinker EDM over conventional machining?
Sinker EDM allows the creation of complex internal geometries, sharp corners, and intricate details without mechanical stress — ideal for hardened materials and precision tooling where milling or grinding can't reach or would cause distortion.
What materials can be machined with sinker EDM?
Any electrically conductive material: carbide, hardened tool steels, stainless steels, and specialty aerospace alloys.
Can you support production quantities with sinker EDM?
Yes. We support both prototype and production volumes with consistent process control and repeatability.
Do you provide electrode design support?
Yes. We design and manufacture electrodes in-house, which allows us to control quality, lead time, and dimensional accuracy throughout the sinker EDM process.
Engineering Resource
The CPI Guide to Precision Sinker EDM
Electrode material selection, orbital motion, recast layer control, and when sinker EDM is the right call for blind cavities and complex internal features in hardened components.
Trusted Partners Of
Ready to Get Started?
Start a Conversation with Our Engineering Team
Whether you have a fully defined print or a concept that needs manufacturability input — our team is ready to review your application and recommend the best path forward.
Carbide Products provides precision sinker EDM services for OEM manufacturers requiring complex cavities, tight tolerances, and advanced material expertise. Our integrated manufacturing capabilities support tooling, carbide components, and precision parts across multiple industries with consistent quality and dependable delivery.