Microdrilling & micromilling with
Micro EDM – precision machining to 10 µm
With Micro EDM:
Precision machining
up to 10 μm
Microdrilling, micromilling and micro-EDM for the highest precision. Using Micro EDM (Micro Electrical Discharge Machining), we produce micro-holes, micro-channels, cavities and complex 3D microstructures in almost all electrically conductive metals – with precision, free of burrs and with consistent results.
Whether in medical technology, toolmaking, aerospace, precision engineering or research – micro EDM enables geometries that are often no longer achievable using conventional drilling or milling.
Retero GmbH specialises in the micro-machining of high-precision metal components. With over 20 years’ experience, we manufacture components with tolerances in the micrometre range for demanding sectors such as medical technology, the watchmaking industry and precision engineering.
Thanks to fine-wire-erosion (micro-EDM), we machine metals of any hardness with the utmost precision, enabling us to bring even the most demanding projects to fruition. Swiss precision, cutting-edge technology and uncompromising quality make Retero a reliable partner for high-end applications.
Our commitment to quality is confirmed by our ISO 9001 and ISO 13485 (medical devices) certifications.
What is micro EDM?
Micro EDM (micro-erosion), also known as micro-drilling and micro-milling, is a high-precision manufacturing process for producing the finest micro-holes and microstructures. The material is removed by controlled electrical discharges – without contact and without mechanical cutting forces. Unlike conventional drilling or milling, no high tool forces are generated. This allows even the smallest bores, delicate contours and complex 3D geometries to be produced with the highest precision – regardless of the material’s hardness.
Why choose micro EDM over conventional drilling
or milling?
As tool sizes decrease, the stresses on tools during drilling and milling increase significantly. Tool breakage, vibrations, restricted chip removal and high wear limit the achievable precision and cost-effectiveness.
- Micro EDM overcomes these limitations and enables:
- Micro-drilling from 10 μm (0.01 mm)
- Micro-milling of complex 3D geometries
- Depth ratios of up to 150 : 1
- Virtually burr-free machining
- No mechanical cutting forces
- Maximum repeatability in the micrometre range
- Machining of steel, cemented carbide, titanium, Inconel and other electrically conductive materials
Technology comparison
-
- Smallest drill holes
- Micro-milling
- Microchannels & cavities
- Depth / Diameter
- Mechanical shear forces
- Tool breakage
- Machining of hardened materials
- Ridge formation
Conventional machining
- approx. 0.10–0.20 mm
- Limited
- Limited
- 10–20 : 1
- High
- High risk
- Restricted
- Possible
Initial hole erosion
- approx. 0.20 mm
- No
- No
- until about 100 : 1
- None
- Virtually impossible
- Very good
- Very low
Micro EDM
- 10 µm (0.01 mm) and larger
- Yes
- Yes
- , 150 : 1
- None
- Virtually impossible
- Excellent
- Virtually none
Typical Applications
- Micro EDM is ideal for any application that requires the highest precision and the finest structures:
- Micro-holes for nozzles and injectors
- Microchannels and cooling structures
- Micromilling of Cavities and Micropockets
- Microstructured Surfaces
- Precision Tools and Mold Making
- Sensors and Microfluidics
- Aerospace
- Research and Development
Your Partner for Micro-Drilling & Micro-Milling
From a single micro-hole to a complex microstructure—we support you in the development, feasibility assessment, and manufacturing of sophisticated precision components. Send us your drawing or CAD data. Together, we’ll develop the optimal solution for your micro-machining needs.
Send us your drawing or CAD data. Together, we'll develop the best solution for your micro-machining needs.