Benefits of Sinker EDM in Aerospace Precision Machining

To meet the requirements of the aerospace industry, machined parts are often designed with light-weighting in mind, leading to complex geometries and tight tolerances. Often, these can be tricky to machine with conventional CNC machining. Sinker Electrical Discharge Machines, EDMs, can provide a method to achieve these machined details.

How does it work?

By creating a mirror image on a piece of graphite, EDM machining burns away the metal with small electrical discharges for a highly precise finish.

What are the best applications for sinker EDM?

Sinker EDM is excellent for machining intricate shapes with accuracy and low risk. It has a wide range of applications and industries, including aerospace precision machining. This might include thin details or square corners that are difficult to achieve with conventional machining.

What type of experience is needed for sinker EDM?

Our team is highly experienced and has in-depth knowledge of utilizing EDM sinker machining as part of our manufacturing process.


Prosper-Tech provides sinker EDM as a value-add service for parts requiring this additional processing and as a stand-alone service for customers looking for finishing touches.

We use a Charmilles Roboform Form 30iRT for our sinker EDM needs. It is a large EDM sinker machine with outstanding performance and reliability. This precision machine comes with advanced gamma control technology that optimizes the machine’s performance and provides glossy finishing for even bigger workspace surfaces.

Contact us to learn more about this service!

Back To All News & Blogs →

Gabby Devroy

VP Business Development

September 22, 2023

Prosper-Tech Machine & Tool offers services for build-to-print precision machining. Located in Macomb County in Richmond, Michigan, we serve the medical, defense, and aerospace/space industries.

Your Precision Machining Partner