Technical Guide
Sinker EDM Materials Guide
Compare wire EDM and sinker EDM by feature access, cavity shape, electrode strategy and drawing requirements.
EDM Feasibility Notes
We review EDM feasibility for the selected material using the drawing geometry, conductive material condition, tolerance, surface finish, quantity and inspection requirements.
Technical Explanation
This guide explains how material conductivity, alloy condition, heat treatment and geometry affect EDM process selection.
Project question: Sinker EDM Materials
Process Capability Facts
We review EDM process fit from material conductivity, feature access, thickness, geometry, tolerance, surface finish and inspection requirements.
Tolerance, Surface Finish and Geometry Review
Typical tolerance and surface finish depend on material, thickness, feature geometry, flushing, finishing passes and inspection method. Final values must be confirmed from the drawing.
Recast Layer / Surface Integrity Notes
Surface integrity, recast layer, micro-crack risk, post-processing and inspection depend on the material, EDM process, geometry and machine setup.
Technical Review Checklist
| Concept | Sinker EDM Materials Guide |
|---|---|
| How we use this guide | We use these points to discuss EDM process fit before confirming the production approach. |
| Drawing review | We confirm material conductivity, feature access, geometry, thickness, tolerance, surface finish and inspection method from your drawing. |
| Project details | Please include drawings, material grade, critical dimensions and any required inspection or surface-integrity controls. |
Inspection and Capability Reference
Inspection planning may include dimensional measurement, optical measurement, surface roughness checks and report requirements according to the drawing.
Technical Note
Use this technical guide to prepare your drawing and key requirements, then contact our team when you need project-specific EDM review.
Need help reviewing an EDM drawing?
Send a drawing question, material details and key requirements for technical review.
Frequently Asked Questions
Why must EDM materials be electrically conductive?
EDM removes material through controlled electrical discharges, so the workpiece must conduct electricity.
Which material details affect EDM review?
Material grade, alloy condition, heat treatment, hardness, stock condition and conductivity affect process selection.
Can heat-treated materials be machined with EDM?
Many conductive heat-treated materials can be reviewed, but geometry, distortion risk, tolerance and surface requirements must be confirmed.
Does material thickness affect EDM planning?
Yes. Thickness affects cutting speed, flushing, taper control, tolerance stability and inspection planning.
What should be sent for material feasibility review?
Send drawings, material grade, heat treatment condition, thickness, tolerance, surface finish and inspection requirements.