Known for precision, Duluth, MN, Wire EDM cuts intricate shapes in hard or delicate materials without physical contact. It can cut complex shapes in hard or delicate materials without physical contact, making wire EDM essential to Precision CNC Machining and production.
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 Duluth, MN, Wire EDM can accelerate and enhance your next project’s success.
Article Synopsis
- An overview of how wire EDM works, why it’s a non-contact cutting method, and situations where it beats conventional machining.
- Key specifications and capabilities including tolerances, taper limits, work envelopes, and materials to assess project fit.
- Simple examples of real-world applications and industries (aerospace, medical, packaging, energy) with notes on who oversees 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 parts to medical components, wire EDM provides design and production options beyond the reach of conventional processes. The sections below explain how wire EDM works, its applications, and what to expect from 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
Check out our machining capabilities, success stories, and extra content about Duluth, MN, Wire EDM on the blog and FAQs.
What Is Wire EDM Machining? | [city, MN, Precision CNC Services
Wire EDM is a specialized process within our broader CNC machining capabilities. Unlike standard machining tools that make contact, wire EDM uses a fine, electrically charged wire to cut conductive metals. Controlled sparks from the wire erode material along a programmed path, leaving highly accurate cuts without mechanical stress.
It’s particularly suited for work conventional tools can’t handle: detailed profiles, slim slots, sharp internal corners, and parts in hardened steels, titanium, carbide, or similar alloys. Every part exits the process with accuracy, clean edges, and readiness for your next build stage.
Real-World Applications for Duluth, MN, 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 provides burr-free cutting across conductive materials, from titanium and carbide to Inconel, hardened steels, and others.
Prototypes, fixtures, and production work in Duluth, MN, are often carried out with wire EDM. Examples of applications include:
- Aerospace: Turbine slots, seals, and tooling inserts cut to tight tolerance even after heat treatment.
- Military & Defense: Critical defense assemblies and hardened alloys machined burr-free with tight internal edges.
- Automotive: Complex powertrain tooling, mold inserts, and prototype parts with fine internal clearances.
- Medical: Precision implant components, surgical instruments, and micro-scale features cut without burrs.
- Packaging: Forming dies and wear parts with sharp edges and smooth finishes to reduce post-processing.
- Food & Beverage: Durable stainless components for food-grade washdown, cut cleanly and stress-free.
- Oil & Energy: Precision-machined sealing surfaces, pump hardware, and alloys that withstand corrosive environments.
- Automation & Robotics: Motion-critical housings, fixtures, and components for automation systems with tight interior details.
- Firearm Manufacturing: Firearm slides, tooling, and internal pieces requiring accurate, burr-free machining.
- Consumer & Commercial Products: Precision branding dies, fixtures, and parts for consumer and commercial applications.
- OEM & Custom Applications: R&D prototypes to production in exotic or hardened materials—if it conducts, wire EDM handles it.
Need help with a project or part? Contact us online or call 573-646-3996 to review your Duluth, MN, wire EDM machining needs.

FANUC ROBOCUT α-C400iC: New Wire EDM Technology
We’ve added the FANUC ROBOCUT α-C400iC to increase precision, speed, and thin-wire cutting capability. Fast auto-threading, consistent performance in extended runs, and high-quality surface finishes make it a strong fit for complex designs and small 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? Unlike older specs, the ROBOCUT supports thin-wire use down to ≈0.002″, offers taper options up to ±45° @ 1.57″ (with option), and runs faster, steadier unattended cycles with AWF3 and iPulse3. The work envelope and load ratings vary from older equipment, so we tailor machine choice to suit your part size and required tolerances.
Wire EDM Capabilities & Specs
Serving Duluth, MN, our Wire EDM offering accommodates both tiny features and oversized workpieces, ensuring crisp edges and dependable accuracy on conductive materials. See the breakdown below for more on 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. |
Want to know more about a part or material? Contact us or call 573-646-3996 for information on Wire EDM in Duluth, MN.
Who Uses EDM Wire Cutting in Duluth, MN?
Wire EDM has applications far past the machine shop—it’s a precision approach for anyone tasked with delivering complex parts on the first try. 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: Refine and prove out designs quickly to prepare for mass production.
- Quality Assurance Teams: Receive dimensionally consistent, burr-free components that meet demanding tolerance requirements.
- Compliance & Regulatory Specialists: Rely on parts built with precision to satisfy compliance and audit standards.
- Maintenance & Reliability Engineers: Maintain uptime with accurate, like-for-like replacements for worn or broken components.
If your job depends on precision, our Duluth, MN, EDM wire cutting capabilities help you get there on time and within budget.

Materials We Work With for Wire EDM
Wire EDM applies exclusively to electrically conductive materials, which covers metals and alloys that push past the limits of traditional cutting. It achieves smooth, burr-free results free of thermal or mechanical stress, on everything from hardened steels and thin-walled sections to exotic alloys.
- Aluminum: Lightweight, corrosion-resistant, and widely machined for housings, brackets, prototypes, and high-performance parts.
- Stainless Steel: Widely used in aerospace, medical, and food industries thanks to its strength and corrosion resistance.
- Brass & Copper: Known for machinability and conductivity, often used for electrical contacts, connectors, and fluid-handling equipment.
- Titanium: A blend of strength, low weight, and corrosion resistance makes it essential for aerospace, surgical, and performance uses.
- Tool Steels & Carbides: Engineered for cutting hardened steels and carbide, making them critical in dies, molds, and wear components.
Wire EDM in Duluth, MN, 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 Duluth, MN, Wire EDM Cutting?
For decades, Roberson Machine Company has specialized in delivering precision manufacturing solutions where accuracy is critical. Through advanced CNC machining and wire EDM technology, we bring technical knowledge, reliable turnaround, attentive service, and extensive value-added services to Duluth, MN, clients.
Additional machining capabilities we provide are:
- Precision Stainless Steel Machining
- CNC Lathe Machining
- Custom CNC Machining for Part Production
- CNC Machine Automation
- Oil and Gas Precision Machining
- Aerospace Manufacturing
- Automotive Part Manufacturing
- EDM Machining
- High Volume CNC Machining
- Industrial Automation
Backed by advanced machining and expert support from start to finish, the Roberson Machine Company delivers surgical-grade wire EDM solutions. Discover details about our history and team, get a quote online, or call 573-646-3996 with questions regarding Duluth, MN, Wire EDM services and machining capabilities.

