Technical Guide
What Is Small Hole EDM Drilling?
Review how small hole EDM drilling supports start holes, cooling holes and fine conductive-hole features.
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 helps prepare EDM drawings by reviewing material conductivity, process access, tolerance, surface finish and inspection requirements.
Project question: What Is Small Hole EDM Drilling?
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 | What Is Small Hole EDM Drilling? |
|---|---|
| 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
What is small hole EDM drilling used for?
Small hole EDM drilling is commonly reviewed for start holes, cooling holes and fine holes in conductive materials.
What affects small hole EDM feasibility?
Hole diameter, depth, aspect ratio, material conductivity, flushing and inspection method affect feasibility.
Can small hole EDM drill every material?
No. The workpiece must be electrically conductive and the hole geometry must be reviewed.
How should small EDM holes be inspected?
Inspection may use suitable pin gauges, optical measurement or other methods defined by the drawing.
What files are needed for small hole EDM review?
Send drawings with material grade, hole diameter, depth, position tolerance, quantity and inspection requirements.