• EOS Polymer Part in Powder | © EOS
    Selective Laser Sintering

    EOS SLS Techology for Plastics 3D Printing
    SLS 3D Printer for Additive Manufacturing

Selective Laser Sintering What is SLS?

Selective laser sintering (SLS) is a professional additive manufacturing technology for plastics 3D printing. With a SLS 3D printer, you can create plastic parts based on CAD Data (Computer Aided Design Data). With more than 30 years of experience in industrial 3d printing, EOS has perfected the method of selective laser sintering and offers a wide range of plastic 3D printers and materials. 

SLS, Selective Laser Sintering - an outstanding 3D printing technology

Plastics 3D printing How does SLS work in detail?

The SLS 3D printer uses a laser as a energy source  which selectively melts powdered plastic material, fusing them together into a 3D printed part. This technology is part of Laser Powder Bed Fusion (LPBF), one of the most advanced and reliable technologies in the 3D printing field of additive manufacturing.

Using 3D data from a CAD model, the laser melts the plastic material exactly at the predifined areas in the powderbed of the additive manufacturing system. After the melting process is completed, the building platform is lowered, and a new layer of powder is added. This process repeats layer by layer until the part is completed.

SLS Technology for 3D Printer

Selective laser sintering is very popular in the field of plastics 3D printing because of its essential advantages like freedom of design, high productivity and low cost per part. In contrast with some other 3D printing technologies, such as stereolithography (SLA) and fused deposition modeling (FDM) SLS 3D printing does not require any support structures. That allows the creation of very complex, almost impossible 3D printed patterns. Producing parts only requires powder and power and no binders nor agents.

SLS main application fields

Functional Advantages


High Mix & Low Volume Production


High Performance Components


Mass Production

With SLS it is possible to create 3D printed parts with directly integrated functionality. Plastic parts being manufactured in a SLS 3D printer can be lightweight, cost-efficient and customer-specific. These features make them ideal for the use in prototyping or even robotic parts and gripping systems
more advantages in detail
Selective laser sintering offers a cost-efficient alternative for the small and medium series production of 3D printed plastic parts. That could be for example plastic housings or spare parts made in an SLS 3D printer. The 3D printer does not need any tools and can produce the parts in the exact quantity required, without a minimum purchase volume.
customer best practice
Freedom360 Camera Housing | © EOS
SLS can produce high-performance molded parts in industrial contexts, e.g. gearwheels and impellers in pumps and high-pressure systems. Biocompatible material to manufacture sterilizable medical devices or patient-specific implants are also an option.
high performance components
Additive manufactured IRT air duct  built from HT-23 material
Selective laser sintering for serial production is possible and quite common. It's a valuable production method for different applications and products. Check out our newest example:

 The COVID-19 pandemic tested global health care capabilities. Supply chains were disrupted, requiring local agile solutions for certified medical devices. Check out how SLS 3D printer from EOS helped to produce nasal swabs in serial production.
to the nasal swabs case study
3D printed nasal swabs with porous-specific activated surface on the head plus highly flexible stick | © 3D printed nasal swabs with porous-specific activated surface on the head plus highly flexible stick

Spotlight on Quality with EOS Plastics 3D Printing Experience in Additive Production since 1989

1700 Installed Base
in Different Industries
27 Years
in SLS 3D  Printing
12 Material & Proven Processes
For our 
SLS 3D Printers
EOS Polymer Fantasy Building Process | © EOS

SLS 3D Printer SLS systems for every 3D printing need

Are you looking for a SLS 3D printer for your production? EOS offers a wide range of 3D printer tailored to your individual additive manufacturing requirements. You can choose form a compact system up to a modular and digitally networked 3D printing platform for series production on industrial scales.

SLS 3D Materials for Plastics 3D Printer

The right material is essential to get a good result in the selective laser sintering process. At EOS, we have exceptional materials expertise and a comprehensive portfolio of highly developed plastic and polymer 3D printing materials for addtive manufacturing.

The most common material for selective laser sintering is nylon, also known as polyamide. This plastic 3D printing material is beloved for its lightweight, strong, and flexible properties. At EOS, we offer two versions of nylon: PA 11 (Polyamide 11) and PA 12 (Polyamide 12). Parts made from nylon are robust, stable for long periods of time, chemically resistant and extremely versatile.

Besides these standard plastic material, EOS is also continuously developing its range of high-tech materials to meet special customer requirements like the flexible TPU or high-temperature PAEK (Polyaryletherketones)

We’re happy to advise you Request your personalized offer now
Vanessa Seidenschwarz
Product Line Manager Polymer Materials

What our customers say

Laser sintering was the only process that made it possible to produce the Bionic Handling Assistant and its gripping element, the DHDG adaptive gripper. Due to the complexity and integrated functionality of the components, there is no alternative way of production.This process enables us to adjust the DHDG adaptive gripper to the specific application and is thus already used by customers all over the world.
Klaus Müller-Lohmeier
We've been using EOS technology for more than eight years with exclusively positive results. When applied correctly, the design flexibility offers significant benefits that can give our customers advantages unrivaled in the marketplace.
Hannes Kuhn
The enormous advantage of additive manufacturing is that we can always manufacture replacement parts that are as good as new, allowing us to keep our trains properly maintained for decades. We do not have to compromise on quality or performance. The cost is also lower than custom molds.
Florens Lichte
DB Fahrzeuginstandhaltung GmbH

The Future of SLS 3D Printing Check out what's coming up next when it comes to 3D Printing Technology