We are specialists in Laser Micromachining

Welas Oy Ltd - Laser Technology

We offer our laser know-how regarding testing, research and manufacturing processes involving demanding and complex products.

Laser Micromachining

Laser micromachining is ideal for situations where multiple microscopic small holes, slots or grooves are needed close to each other.


  • Material thickness starting at 5 microns
  • High repetition accuracy and cutting quality (groove width even as small as 0.025 – 0.06 mm)
  • Minimal thermal effect
  • Wide selection of materials, material for tubes with a minimum of 0.3 mm in diameter
  • Accuracy in accordance with intended use of the product


Laser micromachining enables the use of an extensive range of different thin materials varying in thickness from 0.005 to 3.0 mm. In addition to laser cutting sheet material, tubular material can also be used with diameters ranging from 0.3 to 40 mm.

Laser Cutting

The benefits of laser cutting comprise speed and minimal thermal effect in combination with a very accurate cut. We utilize the latest technology in our field and we have specialized in laser cutting of thin material that demands careful handling. We have experience in:


  • Cutting reflective materials (e.g. aluminium, brass, copper)
  • Processing noble metals (gold, silver, platinum)
  • Handling rare materials that are used in e.g. the medical and electronics industry and space exploration (titanium, tungsten, tantalum, densimet, aluminium oxide)
  • Optical parts, e.g. gobos, masks

Other Laser Processing Methods


Laser Welding

Laser welding is suitable both for sheet and tubular material. By applying laser welding small and complex parts can be attached to one another with almost unnoticeable weld seams. Laser welding requires careful preparation and positioning, but the advantage is a narrow weld that hardly leaves a mark on the surface of the work piece.

Advantages of Laser Welding:

  • Does not require after treatment (can be the last manufacturing step)
  • Minimal thermal effect
  • Material thickness 0.01 mm and thicker
  • Bimetallic welds
  • Surface to be welded may even be in a location that is difficult to access

Laser Drilling

Laser drilling makes it possible to drill a large amount of holes into a work piece at very high speed. Laser drilling is perfect for manufacturing different filters when a controlled flow of gas or liquid is required.

Advantages of Laser Drilling:

  • Extremely hard and difficult materials can be machined
  • Hole size a minimum of 0.025 mm
  • Location of the hole is freely selectable
  • Blind and slanted holes can also be manufactured

Laser Marking

Laser marking is a widely used marking technique for identifying products and improving traceability in serial production. Laser marking can also be utilized for tools or components which have to withstand the use of detergents or acids or that are exposed to the elements, heat or friction.

Most common applications of Laser Marking:

  • Logos
  • Serial Numbers
  • Product Codes or Bar Codes
  • Names or other means of Identification
  • Shims
  • Feeler Gauges