EDM Machines (Wire EDM & Sinker EDM)
If you’re comparing machining methods for a high-precision component, this page outlines the EDM (Electrical Discharge Machining) capability available at our facility. It’s designed to help you understand what EDM is used for and when it’s the right fit for your part.
Important: The EDM machines referenced on this page are not for sale. They are part of our in-house production equipment and are used exclusively to manufacture parts for customers.
As part of our broader CNC Machine Services, EDM allows us to produce intricate features and tight tolerances in conductive materials—especially where conventional cutting methods are limited by hardness, geometry, or tool access.
What Is EDM Machining?
EDM (Electrical Discharge Machining) is a non-contact process that removes material using controlled electrical discharges (sparks). Rather than cutting with a rotating tool, EDM uses electrical energy to erode material in a highly controlled way. This makes it well suited to fine detail, sharp internal corners, narrow slots, complex profiles, and precision cavities.
EDM is typically used on electrically conductive materials and is often selected when the part is hardened, the geometry is complex, or the required finish and tolerance are difficult to achieve through traditional machining alone.
Wire EDM Machines
Wire EDM uses a thin, continuously fed wire as the cutting electrode to precisely profile conductive materials. Because the wire can cut complex shapes with excellent accuracy, wire EDM is commonly used for intricate profiles, fine features, and tight-tolerance components.
Typical wire EDM applications include: precision profiles, internal cut-outs, fine slots, tooling components, plates, and complex shapes in hardened materials.
Sinker EDM Machines (Ram EDM)
Sinker EDM (also known as Ram EDM) uses a shaped electrode to create a cavity or feature by “burning” it into the workpiece. This is ideal when parts require complex cavities, sharp internal corners, or repeated cavity geometry that needs to be consistent from part to part.
Typical sinker EDM applications include: mould and die cavities, precision pockets, complex internal forms, and features where tool access is limited or geometry is difficult to machine conventionally.
When EDM Is the Right Choice
EDM can be a strong option when your component includes fine detail, tight internal corners, narrow slots, hardened materials, or complex internal geometry. It’s also useful when conventional cutters would introduce distortion, tool deflection, or excessive tool wear.
If you’re unsure whether EDM is required, we can review your drawing or model and recommend the most practical process based on material, tolerance, geometry, quantity, and lead time.
EDM Within a Complete In-House Machining Workflow
EDM is often used as a standalone process, but it can also be combined with turning, milling, and multi-axis machining as part of a complete manufacturing workflow. This helps achieve the final geometry efficiently while maintaining accuracy across critical features.
Infinite Engineering offers CNC machine services across Australia, supporting customers who need precision-machined components produced with consistent quality and reliable delivery.
Request a Quote for EDM Machining
If you have a part that may suit wire EDM or sinker EDM, send through your drawings or 3D files and we’ll advise the best path forward. For high-precision components manufactured in-house, our CNC Machine Services can incorporate EDM where it provides the best outcome.
Contact Infinite Engineering to discuss your EDM requirements, tolerances, materials, and lead time.