Sharp corners, deep features, and hardened materials — these are the areas where traditional machining struggles.
At CS MOLDING, we provide precision EDM machining to help customers produce complex parts with high accuracy and reliability.
When CNC Machining Reaches Its Limits
If your part includes the following features, EDM is often required:
Sharp internal corners
Deep ribs or narrow slots
Hardened steel components
Complex internal geometries
In these cases, CNC machining alone may not achieve the desired result efficiently.
Typical EDM Applications
Injection Mold Components
Mold inserts
Cavity details
Thin ribs and deep slots
Venting grooves
EDM is widely used to create precision mold features that directly impact product quality.
Tooling & Die Parts
Punches and dies
Tooling inserts
Cutting profiles
Wear-resistant components
Ideal for hardened materials where conventional machining becomes difficult.
Automation & Mechanical Parts
Internal keyways
Narrow slots
Hidden internal features
Precision channels
EDM enables machining of geometries that cutting tools cannot access.
Micro & Precision Components
Micro slots
Fine edges
Small structural features
Connector parts
Perfect for small, high-precision features with tight tolerances.
CNC + EDM: The Most Efficient Approach
In most projects, the best results come from combining both processes:
CNC machining → for structure and bulk material removal
EDM machining → for fine details and complex features
At CS MOLDING, we integrate CNC and EDM to deliver:
Higher precision
Better reliability
Optimized cost and lead time
Why Work With CS MOLDING?
CNC + EDM integrated manufacturing
Experience with mold and precision components
Stable quality control on critical features
Engineering support for design optimization
Most EDM parts we produce are for mold inserts and precision tooling.
Not Sure If Your Part Requires EDM?
You don’t need to decide. Just contact us
Our engineers will review it and recommend the most efficient and cost-effective solution.
Get a quote within 24 hours.

