When you need sheet metal parts with high precision, clean cuts and short lead times, 2D laser cutting is an effective choice. At Thor Ahlgren AB, we laser cut flat sheet metal parts with a focus on dimensional accuracy, stable quality and a workflow that works just as well for prototypes as for series production.
3D laser cutting is a manufacturing method that allows complex shapes to be cut in three dimensions with high precision and repeatability. Unlike traditional 2D laser cutting, which mainly cuts contours in flat sheets, 3D laser cutting is used to process shaped parts, bent components, tubes, profiles and other geometries where the cut needs to follow a surface or an angle.
Nd:YAG: A solid-state laser where the laser-active medium is a YAG crystal doped with neodymium. It provides a wavelength of around 1064 nm, high precision, and the option of both pulsed and continuous operation. Nd:YAG is often used for finer details, thinner materials, and the combination of cutting/welding.
Disc laser: A further developed solid-state laser where the laser-active material is a thin disc mounted against a cooling plate. This provides very stable beam quality, high efficiency, and is well suited for automated high-volume production in metal, with narrow cuts and good repeatability.
Eccentric pressing is a method of sheet metal pressing that uses an eccentric press to shape or cut metal using high, repeatable strokes.
The picture shows a pressed detail.
A fiber laser creates light in a diode-pumped, rare-earth-doped glass fiber (often ytterbium). The same fiber both amplifies and guides the light to the cutting head. There, the beam is focused to a very small point of high energy density. The result is a narrow cutting gap (kerf), high speed and good detail reproduction-especially in thin to medium-thick sheet metal and in reflective metals such as aluminum and copper.
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CO₂ laser cutting uses a gas laser with a wavelength around 10.6 µm. This energy is well absorbed by materials such as acrylic, wood, cardboard, textiles and leather, as well as thin metal sheets. The result is narrow cuts and often shiny edges in plastics. The method is relevant when you want high detail, small radii and low heat impact. Compared to mechanical processing, there is no tool wear. Compared to fiber laser, CO₂ is strong in non-metals. Compared to waterjet, it is faster on thinner materials, but requires extraction for flue gases.