Spark Assisted Chemical Engraving

Posalux is leader in integration of innovative technologies for mass production.

Spark Assisted Chemical Engraving is an innovative solution to machine glass substrates without material alteration, keeping transparency properties with high accuracy.


Micro Machining

  • Hole diameter down to 150 μm
  • On any glass materials or any SIO based material
  • Glass transparency property not impacted
  • Without material deposit and no damages or burrs
  • Wall thickness / hole diameter ratio up to 10
  • Smooth and clear machined surfaces
  • No clean room facilities needed



Medical industry

  • Microfluidic devices
  • Multi layer mixer
  • Lab-On-Chip
  • Chemical (mixer chips, micro-reactor)

Electronic industry

  • Drilling for Through Glass Vias (TGV)
  • Optical PCB
  • micro-electro-Mechanical-Systems (MEMS)

Watch industry

  • Watch dial glass
  • Mechanical parts
  • Decoration


Chemical engraving


  • Material removal thanks to thermo-chemical process
  • Physical attack by discharges
  • Chemical etching (breaking Si-O-Si bonds by OH radicals) 
  • High removal rate obtained thanks to micro-force closed-loop regulation
  • Process stability by electrolyte circulation and temperature control


Machining specifications

  • Drilling speed: 100 μm/s up to 200 μm/s, then 50-60 μm/s
  • Groove machining speed: 20-100 μm/s (depth from 100 μm to 1000 μm)
  • Tolerances on channel width: 5%


Specific devices and solutions

  • Clamping devices
  • Specific algorithms to optimize material removal rate
  • Technology support (SACE parameters)
  • User interface options


Quality and expertise

  • Scanning Electron Microscopy (SEM)
  • Rougness measurements
  • Optical measurements to control shape


When you buy a Posalux product, you acquire a complete customized solution based on our expertise and know-how.


Mikroproduktion (01/2016) : interview Prof. Dr. Wuethrich

Mikroproduktion (01/2016) : article Glass processing with precision and efficiency


Job Shop Service

Our glass job shop service offers quick solutions for production requirements.

Easy - Efficient - Reliable