Wire EDM is one of the most precise tools in modern manufacturing. Capable of cutting complex shapes in hard or delicate materials without physical contact, wire EDM is a mainstay in Precision CNC Machining and manufacturing.
At Roberson Machine Company, we use advanced wire EDM (Electrical Discharge Machining) technology to deliver burr-free, repeatable results for everything from intricate prototypes to production-critical components. Give our team a call at 573-646-3996 or contact us online to learn more about how Wire EDM can accelerate and enhance your next project’s success.
Article Synopsis
- A quick look at how wire EDM works, why it cuts without contact, and when it outperforms conventional machining.
- Specifications and capabilities (tolerances, taper angles, work envelopes, materials, etc.) to see if wire EDM cutting matches your project’s strict requirements.
- Straightforward examples of real-world applications and industries (aerospace, medical, packaging, energy) and who inside those teams typically owns the work.
- What Roberson Machine Company brings to the table. This includes proven processes, modern equipment, and predictable lead times from prototype through production.
From aerospace prototypes to medical-grade components, wire EDM opens up design and manufacturing possibilities other processes can’t match. In the sections below, we’ll break down how it works, where it’s used, and what to expect when you work with Roberson Machine Company.
Table of Contents
- What Is Wire EDM Machining?
- Real-World Applications for Wire EDM and Precision Cutting
- FANUC ROBOCUT α-C400iC: New Wire EDM Technology
- Wire EDM Capabilities & Specs
- Who Uses EDM Wire Cutting
- Materials We Work With for Wire EDM
- Why Roberson Machine Company
Learn more about our machining capabilities, success stories and reviews, and other information about Wire EDM on our blog and FAQs.
What Is Wire EDM Machining?
Wire EDM is a specialized process within our broader CNC machining capabilities. Instead of using a cutting tool that physically contacts the workpiece, wire EDM shapes conductive metals with a thin, electrically charged wire. The wire produces controlled sparks that erode material along a programmed path, creating extremely accurate cuts with no mechanical stress on the part or component.
This makes it ideal for features that are difficult—or impossible—to produce with conventional machining: intricate profiles, fine slots, sharp internal corners, and parts made from hardened steels, carbide, titanium, or other challenging alloys. Every cut comes off the machine accurately, clean, and ready for whatever comes next in your build.
Real-World Applications for Wire EDM and Precision Cutting
Choose wire EDM when conventional tooling can’t hit the geometry, finish, or tolerance you need—especially with hard-to-machine materials, thin-walled features, or parts that can’t take rigid cutting forces. Wire EDM cuts conductive metals cleanly and burr-free, including titanium, carbide, Inconel, hardened steels, and more.
Teams use wire EDM for prototypes, fixtures, and full production runs. Common applications include:
- Aerospace: Intricate turbine slots, seal features, and precision tooling inserts that hold tight tolerances after heat treat.
- Military & Defense: Hardened alloy components and mission-critical assemblies that need distortion-free cuts and crisp internal corners.
- Automotive: Complex powertrain tooling, mold inserts, and prototype parts with fine internal clearances.
- Medical: Burr-free surgical instruments, implant components, and micro features in biocompatible metals.
- Packaging: Forming dies and wear parts with sharp edges and smooth finishes to reduce post-processing.
- Food & Beverage: Corrosion-resistant stainless components for washdown environments, cut without mechanical stress.
- Oil & Energy: Precision sealing surfaces, pump components, and alloy parts for high-pressure, corrosive service.
- Automation & Robotics: Fixtures, housings, and motion-critical parts with tight internal features.
- Firearm Manufacturing: Slides, internal components, and tooling where repeatable accuracy and clean edges matter.
- Consumer & Commercial Products: Branding dies, custom fixtures, and low- to mid-volume precision parts.
- OEM & Custom Applications: From R&D one-offs to production runs in exotic or hardened materials—if it’s conductive, we can cut it.
Have a project or a problem? Contact us online or call 573-646-3996 to discuss your wire EDM machining needs.
FANUC ROBOCUT α-C400iC: New Wire EDM Technology
We’ve added a new FANUC ROBOCUT α-C400iC to expand cutting speed, precision, and thin-wire capability. It delivers fast auto-threading, stable long runs, and excellent surface finishes—ideal for complex features and tight internal clearances.
| Specification | Value | Notes |
|---|---|---|
| Max Workpiece Size | 730 × 630 × 250 mm (28.74″ × 24.80″ × 9.84″) | Compact footprint with generous load space. |
| Max Workpiece Weight | 500 kg (≈1,100 lbs) | Stable cutting on medium-to-heavy parts. |
| Table Travel (X/Y/Z) | 400 × 300 × 255 mm (15.75″ × 11.81″ × 10.04″) | Precise positioning for complex features. |
| U/V Travel | ±60 mm | Supports advanced taper and offset work. |
| Max Taper | ±30° @ 80 mm (3.15″); option: ±45° @ 40 mm (1.57″) | Handles steep tapers on thicker stock. |
| Wire Diameter | 0.10–0.30 mm (≈0.004″–0.012″); option: 0.05 mm (≈0.002″) | Thin-wire option supports ultra-fine features. |
| Controller | FANUC 31i-WB | Modern control with iHMI interface. |
| Notable Features | AWF3 auto threading, iPulse3 discharge control, AI thermal compensation, Core Stitch | Improves uptime, finish quality, and accuracy on long runs. |
What’s different? Compared to legacy specs, the ROBOCUT adds thin-wire capability down to ≈0.002″, advanced taper options (±45° @ 1.57″ with option), and faster, more stable unattended cutting thanks to AWF3 and iPulse3. Its work envelope and load capacity differ from older units, so we’ll match the machine to your part size and tolerance needs.
Wire EDM Capabilities & Specs
Our Wire EDM equipment handles everything from micro features to large, heavy workpieces, delivering clean edges and repeatable accuracy on conductive materials. See below for a general breakdown about wire EDMs:
Core Capabilities
| Capability | Spec | Why It Matters |
|---|---|---|
| Max Cutting Height | 16.5″ | Tackle tall parts and deep cavities without multiple setups. |
| Tolerance Maintained | ±0.0003″ | Hit critical features for aerospace, medical, and precision tooling. |
| Max Taper Angle | 45° | Produce complex profiles and reliefs in mold and die work. |
| Wire Diameter Range | .002″–.010″ | Cut ultra-fine details or heavier sections as the job requires. |
| Max Workpiece Weight | 1,800 lbs | Run large industrial components with stable fixturing. |
Work Envelope
| Axis | Travel | Notes |
|---|---|---|
| X / Y / Z | 21.7″ × 14.6″ × 12.2″ | Flexible capacity for varied part sizes and setups. |
Taper Capability by Thickness
| Workpiece Thickness | Typical Max Taper | Use Case |
|---|---|---|
| 12″ | ±10° | Thick tooling plates and heavy die sections. |
| 3.25″ | 30° | Mold components with angled relief features. |
| 1.93″ | 45° | Sharp internal corners and complex taper profiles. |
Questions about a part or material? Contact us or call 573-646-3996.
Who Uses EDM Wire Cutting
Wire EDM isn’t just for machine shops—it’s a precision solution for anyone responsible for getting complex parts made right the first time. Our services are a fit for:
- Project Managers & Directors: Keep schedules on track with parts that arrive on time and to spec, avoiding costly delays.
- Prototype Engineers: Quickly validate and refine designs before moving into large-scale production.
- Quality Assurance Teams: Receive dimensionally consistent, burr-free components that meet demanding tolerance requirements.
- Compliance & Regulatory Specialists: Get inspection-ready parts built to exact specifications.
- Maintenance & Reliability Engineers: Replace worn or damaged components with precise, like-for-like replacements that minimize downtime.
If your job depends on precision, our EDM wire cutting capabilities help you get there on time and within budget.
Materials We Work With for Wire EDM
Wire EDM works only on electrically conductive materials, making it ideal for metals and alloys that are difficult to cut with traditional tools. It delivers clean, burr-free results without mechanical stress or thermal distortion—whether the job calls for thin-walled parts, hardened steels, or exotic alloys.
- Aluminum: Lightweight, corrosion-resistant, and often machined for housings, brackets, and high-performance parts.
- Stainless Steel: Strong, corrosion-resistant, and common in medical, aerospace, and food-grade components.
- Brass & Copper: Highly machinable and conductive, used in electrical contacts, connectors, and fluid-handling parts.
- Titanium: Lightweight, strong, and corrosion-resistant—ideal for aerospace, surgical tools, and performance parts.
- Tool Steels & Carbides: Capable of cutting hardened steels and tungsten carbide for dies, molds, and wear parts.
Wire EDM is one of many CNC machining processes we use to meet your specs. Some jobs call for it exclusively, while others combine it with milling, turning, or other precision methods for the best results that make the most sense depending on the project.
Why Roberson Machine Company
For more than 20 years, Roberson Machine Company has delivered precision manufacturing solutions for industries where accuracy isn’t optional. From our modern CNC shop to our dedicated wire EDM equipment, we combine technical expertise with dependable lead times, responsive service, and a full range of value-added services.
Other machining capabilities include:
- CNC Turning
- CNC Milling
- Precision CNC Machining
- Stainless Steel CNC Machining
- Aluminum CNC Machining
- Prototype CNC Machining
- 5-Axis CNC Machining
- Multi-Axis CNC Machining
Offering advanced machining services and expert guidance through the entire production process, the Roberson Machine Company is your go-to for surgical-grade wire EDM solutions. Learn more about our team and history, contact us online for a quote, or call 573-646-3996 if you have any questions about Wire EDM services and our machining capabilities.