INFO ABOUT PLUNGE EDM

At R.L. Zeider Inc., we provide high-precision Plunge EDM (Sinker EDM) services for complex geometries and features that cannot be achieved with traditional machining methods. This process is ideal for creating internal cavities, sharp corners, and intricate details in hardened materials.

Plunge EDM allows us to machine difficult features with exceptional accuracy while maintaining part integrity.

Complex Features Without Cutting Forces

Plunge EDM uses a custom-shaped electrode to erode material through controlled electrical discharges. Because there is no direct cutting force, this process is ideal for machining delicate features, deep cavities, and sharp internal geometries.

This allows us to produce parts that would be extremely difficult or impossible to machine using conventional tools.

Our Plunge EDM Capabilities

    •    Machining complex internal cavities and blind features

    •    Sharp internal corners and fine details

    •    Tight tolerances (±0.0002” depending on geometry)

    •    Machining hardened materials without distortion

    •    Prototype and low-to-mid volume production

    •    Custom electrode design for specialized features

Materials We Work With

    •    Hardened tool steels

    •    Stainless steels

    •    Carbide

    •    Aluminum (when applicable)

    •    Exotic and specialty conductive alloys

Our Process

Plunge EDM enables us to create highly detailed features with exceptional precision and repeatability. Each job is carefully programmed and executed using custom electrodes designed specifically for the required geometry.

Because there are no mechanical cutting forces, parts maintain their structural integrity, making this process ideal for high-performance and delicate components.

We ensure every part meets required specifications through careful inspection and quality control.