Electrical discharge machining
EDM Machining Kraków
Wire EDM and Sinker EDM for shapes impossible to achieve by milling. Hardened steels, complex 3D geometries and high dimensional requirements.
EDM Machining Kraków
EDM machining is the key finishing technology in injection mould and stamping die production. We use it wherever milling is not sufficient: for precise punch and die profiles, cavities with sharp corners, channels and holes in hardened materials.
Copper and graphite electrodes for Sinker EDM are manufactured in-house on our CNC milling machines, shortening lead times and eliminating subcontractors. Wire EDM cuts profiles in hardened steel with high dimensional precision and no thermal distortion. We also carry out subcontracting EDM services for other workshops and manufacturing plants.
How we handle your order
Analysis & Quotation
Send a technical drawing or CAD file. We evaluate the technology, select parameters and quote the order.
Programming
We prepare the machining programme from the part geometry. Wire EDM: wire path. Sinker EDM: electrodes.
EDM Machining
EDM with ongoing dimensional checks. For Wire EDM, multi-pass cutting is available for a better surface finish.
Inspection & Handover
Measurement of the finished part. On request we issue a measurement report. Part ready for collection or shipping.
Frequently asked questions
What is the difference between Wire EDM and Sinker EDM?
Wire EDM cuts profiles through the material using a tensioned wire. It is used for punches, dies and 2D profiles requiring high precision. Sinker EDM erodes the electrode shape into the part and is used for 3D cavities, channels and shapes impossible to cut with wire.
What tolerances do you achieve with wire cutting?
Accuracy is matched to requirements. Multi-pass cutting allows very low surface roughness and high dimensional precision. Specify the required tolerance range in your enquiry.
Can you machine hardened steels?
Yes. EDM can machine materials of high hardness where conventional milling is not possible or not economically viable. This is one of the main advantages of EDM over milling.
Do you manufacture sinker EDM electrodes?
Yes, copper and graphite electrodes are manufactured in-house on our CNC milling machines. This shortens lead times and eliminates subcontractors.
What are the maximum workpiece dimensions?
Workpiece dimensions depend on geometry. Contact us with your specific case and we will confirm the capabilities for your part.
Do you accept subcontracting orders?
Yes, we carry out EDM services for other workshops and manufacturing plants that do not have their own EDM equipment or need additional capacity.
Have a project that requires precision?
Contact us — free quote within 24h. We work with companies across Poland and Europe.