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EDM Spark Erosion

Established over 20 years ago, we at Microtec EDM specialise in all aspects of EDM spark erosion technology. We have a solid reputation for producing high-quality precision parts at competitive prices for a range of industries. If you’re looking for professional EDM spark erosion, then you’ve found the answer. Please don’t hesitate to get in touch with us for a FREE quote today.

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    35+ Years Of Combined Experience


    Free No-Obligation Quotes


    Fully Accredited & Approved

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    What is EDM spark erosion?

    EDM spark erosion is where an electric spark between 8-12 thousand degrees Celsius is created between an electrode/cutting tool. This effectively vaporises the workpiece material to create the required design. Our Charmilles Roboform 350 EDM spark erosion machine combines high-speed finishing and micro and automated tool changer capability. This speeds up to EDM spark erosion production process. Lower electrode wear also keeps down the cost of the product.

    We complete EDM spark erosion for blue chip companies in areas as diverse as Defence, Medical & Pharmaceutical, Space and Motorsport. Get in touch with us for a FREE quote today.

    How does EDM spark erosion work?

    EDM spark erosion lets us achieve intricate details inside components that would be too complex with traditional cutting methods. The EDM spark erosion technique is useful for the machining of hard materials such as mould tools or the removal of broken taps. It also allows for a good surface finish and the drilling of very small and complicated shapes.

    As there’s no contact between the tool and the piece, intricate sections or weak materials can be worked on without distortion. If materials have a minimum electrical conductivity of 0.01 S/cm, then it’s likely they can be machined with EDM spark erosion. Like Wire EDM, EDM Spark Erosion can be used for applications where adherence to tight tolerances of 0.1 microns is key.

    What are the benefits of EDM spark erosion?

    Difficult-to-Machine Materials

    EDM spark erosion allows us to achieve intricate details inside components that would, otherwise, be too complex or impossible to obtain with traditional cutting methods. The process is accurate and won’t compromise the surface finish of the resulting products.

    Quality Finishes

    As it is a non-contact manufacturing process, EDM spark erosion achieves high-quality finishes. This means that the need for post-processing procedures and surface treatments will be greatly reduced.

    Quick Turnaround

    Our EDM spark erosion machinery can run 24 hours a day, 7 days a week, allowing for quick turnaround times. Our machinery combines high-speed finishing, and micro and automated tool changer capability thus speeding up the production process.


    Our state-of-the-art machinery and automated software allow us to produce intricate, complex parts where a high degree of accuracy is required. Furthermore, our EDM spark erosion results are predictable and repeatable during every production run.

    Tight Tolerances

    We work with a range of industries where tight tolerances are essential. Like Wire EDM, EDM spark erosion can be used for applications where adherence to tight tolerances of 0.1 microns is key.

    How does it work?


    Get in touch with us

    Get in touch with us to arrange a FREE to arrange a FREE consultation where we will discuss the EDM spark erosion needed.


    FREE Quote

    We will agree on a plan for our EDM spark erosion and provide you with a FREE quote based on your requirements.


    Quality Work

    We will undertake the EDM spark erosion process based on your precise specifications for guaranteed results.

    Fully Accredited & Approved Team

    Our highly qualified and experienced staff can provide a complete production service from CAD design assistance and prototyping to mass production of components incorporating full product traceability throughout the process. Further evidenced by Microtec achieving its long-held ambition of AS9100D accreditation in June 2022.

    How much does EDM spark erosion cost?

    Every project for EDM spark erosion that we undertake is bespoke. So, whether you require small or high-volume batch work, one-off products or prototypes, the cost will be tailored to you. Get in touch with us today to discuss your EDM spark erosion and receive a FREE no-obligation quote!

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    Need something else?

    Wire EDM Services

    Wire EDM services are suited to tough materials such as Inconel and hardened tool steels. Using a wire as a tool electrode, this method prevents the material from eroding from the wire itself by continually switching. Learn more…

    Micro Precision EDM Services

    Using a micro ‘fine’ wire as the tool, Micro Precision EDM services are suited to tough materials such as Inconel and hardened tool steels. It can also cut parts made from tungsten carbide, titanium, aluminium, copper and other more exotic alloys. Learn more…

    Why work with us?

    35+ Years of Combined Experience

    Our high-qualified engineers have over 35 years of combined experience in EDM spark erosion. This means that your project is in safe hands with us.

    FREE No-Obligation Quotations

    We offer FREE no-obligation quotes on all our services including EDM spark erosion. This means from quotation to completion, there will be no hidden costs with us.

    Extensive Range of Quality Services

    We are a precision engineering sub-contractor specialising in all aspects of state-of-the-art EDM spark erosion for several high-profile industries and environments.

    If you’re looking for professional & affordable EDM Spark Erosion, please don’t hesitate to contact the experts at Microtec today for a FREE quote!

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