For Features That No Cutter Can Reach.
Die Technology Inc provides ultra-precision wire EDM, sinker EDM, small hole EDM, and micro EDM services. With almost a million hours of EDM experience, we can handle the most challenging projects.
Die Technology Inc provides ultra-precision wire EDM, sinker EDM, small hole EDM, and micro EDM services. With almost a million hours of EDM experience, we can handle the most challenging projects.
Sinker EDM—also referred to as plunge EDM or conventional EDM—is a non-contact machining process used to create precise internal cavities and complex geometries, especially in hardened or exotic materials. By shaping a custom electrode to match the desired feature, the machine “sinks” it into the workpiece using controlled electrical discharges, allowing for extreme precision in blind pockets and sharp internal corners.
Die Technology is a trusted partner for CNC sinker EDM machining, with decades of experience producing ultra-precise tooling and components that meet the most stringent standards. Our team delivers exceptional results for OEMs in medical, aerospace, and advanced industrial applications—especially when geometry, material, and finish requirements go beyond what traditional machining can achieve.
Sinker EDM (also known as die sinking EDM) uses a shaped electrode—typically made of graphite or copper—and electrical discharges to remove material from the workpiece. Unlike Wire EDM, which cuts through a part using a moving wire, Sinker EDM creates internal shapes, blind pockets, and sharp corners that are otherwise impossible to reach with traditional tools.
Think of it like creating a mold cavity by “burning” its negative shape into hardened steel using a precise, controlled spark. The electrode never touches the material, so there’s no cutting force—ideal for injection mold features, micro machining, and high-hardness alloys.
This process is crucial in high-precision mold making, tool & die, and complex component manufacturing, especially when other methods can’t meet geometric or material challenges.
At Die Technology, our sinker EDM services support the highest levels of precision, with:
We utilize CNC sinker EDM machines that are optimized for accuracy and repeatability. Whether you’re working with micro parts, mold inserts, or hardened die components, we can help bring your most demanding designs to life.
Die Technology supports your project from concept to completion, including:
We also support high-mix, low-to-mid-volume production runs, making us a strong fit for aerospace and medical device manufacturers that need reliability, agility, and trusted results.
Die Technology brings over three decades of ultra-precision EDM experience to every sinker EDM project. We combine deep technical expertise, in-house tool design, and high-performance machinery to deliver the most demanding features in the toughest materials. When your part demands accuracy, clean finishes, and internal geometries that no other method can achieve, we’re the partner you trust.
Let’s talk about your next sinker EDM project. Whether you’re producing hardened steel mold inserts, aerospace components, or ultra-precise internal tooling—our experts are ready to help.