Design for wire EDM
Wire EDM Design Guide: Geometry, Finish and RFQ Inputs
Wire electrical discharge machining removes conductive material through controlled spark discharges across a dielectric gap. Because the wire does not cut by conventional contact, the process is useful for hardened materials and delicate profiles, while still requiring realistic rules for access, corner radius and edge condition.
Send drawings for reviewMaterial rule
Workpiece must be electrically conductive
Best fit
Through profiles, slots and hardened parts
Geometry inputs
Thickness, start hole, taper and corner radius
Quality risks
Surface condition, recast layer and inspection alignment
How it works
A moving wire and controlled discharges form the programmed profile
The wire travels through the workpiece while electrical pulses remove small amounts of material. A dielectric system controls the discharge zone and carries away debris. The cutting path, offset and number of finishing passes influence accuracy and surface condition.
- No conventional cutting force at the profile
- A continuous cut normally needs a start or entry strategy
- Internal radius is limited by the wire path and discharge gap
- Thicker or tapered geometry changes process time and stability
Best applications
Use wire EDM when access or hardness limits rotating tools
Typical candidates include precision cutouts, punch-and-die details, narrow slots and profiles in heat-treated conductive material. Blind cavities and nonconductive materials generally require another process.
- Hardened tool steel and conductive alloys
- Fine through-slots and intricate contours
- Low-force cutting of delicate profiles
- Profiles that can be inspected from defined datums
Drawing and RFQ
Define the profile, edge and finish—not only the outline
Provide material condition, thickness, start-hole permission, corner radii, taper and surface requirements. If recast-layer control, skim passes or special cleaning matter to function, state them explicitly.
- Material grade and heat-treatment condition
- Critical profile and positional tolerances
- Required finish or finishing-pass expectation
- Edge, recast-layer and inspection notes
Sources consulted
Further technical reading
This guide is independently written and organized for supplier evaluation. The references below provide background on process principles and machine technology; they are not claims about MINGYU equipment or guaranteed project capability.
Questions buyers ask
Technical answers before the RFQ.
Can wire EDM cut any metal?
The workpiece must be electrically conductive, but stable feasibility still depends on material, thickness, geometry and surface requirements.
Can wire EDM make a perfectly sharp internal corner?
No. The wire diameter, discharge gap and path create a finite internal radius.
Is wire EDM always more accurate than milling?
No. It is advantageous for particular geometries and materials; required accuracy, finish, time and inspection should be compared for the actual feature.
Continue your evaluation
Related manufacturing information
Capability is confirmed against your drawing.
Send CAD, drawing, material, quantity, finish, inspection requirements and target date for an engineer-led review.