• Selective Laser Sintering Polymer Part in Powder
    EOS Additive Manufacturing

    Selective Laser Sintering (SLS)
    3D Printing

An Outstanding Technology for SLS 3D Printing

Selective laser sintering (SLS) 3D printing is a professional additive manufacturing technology trusted by a broad variety of manufacturers for its ability to create functional and robust plastic parts.

Discover what makes SLS technology so powerful and find out more about the SLS 3D printing process and our systems. EOS has captured more than 30 years of experience in industrial 3D printing and offers a wide range of polymer 3D printers and materials.

How Does Selective Laser Sintering (SLS) 3D Printing Work?

The EOS SLS 3D printer uses a laser to melt polymer powder and fuse it into a solid 3D printed part. SLS is part of the Laser Powder Bed Fusion (LPBF), one of the most advanced and reliable technologies in 3D printing.

Using a CAD design model, the laser melts the plastic material precisely at the predefined points in the powder bed. The technique requires no support structures, as the unfused powder supports the part during printing. After completion of the melting process, a new layer of powder is applied. This process repeats layer by layer until the part is completed.

SLS is a new high end method that has been primarily used for rapid prototyping and small batch production of components. Within the process of commercialization of selective laser sintering, the production tasks are being expanded enabling new design options for a wide range of products.

What Are the Benefits of EOS Selective Laser Sintering?

Selective Laser Sintering is an ideal and outstanding method and is used for complex parts and very popular in the field of plastic 3D printing due to its various advantages. Unlike some other 3D printing technologies such as stereolithography (SLA) and fused deposition modeling (FDM), the SLS 3D printing process does not require support structures. This enables the production of very complex, almost impossible 3D printed patterns. Only powder and power are needed to produce parts, no binders or additives. 



Low costs per part


High productivity  


Excellent mechanical properties


Functional integration


Faster time to market


No support structures needed

Main application fields of SLS Technology

Functional Advantages


High Mix & Low Volume Production


Mass Production

With SLS, it is possible to produce 3D-printed parts with integrated functions that are lightweight, cost-efficient and customized. These features make them ideal for use in prototyping or even robotic parts and gripping systems.
more advantages
3D-printed parts with selective laser sintering
Selective laser sintering offers a cost-efficient alternative for the production of small and medium series of 3D printed plastic parts such as plastic housings or spare parts. The EOS SLS 3D printer requires no tooling and can produce parts in exactly the quantity you want with no minimum purchase requirement.
customer success story
Freedom360 Camera Housing | © EOS
Selective laser sintering for series production is a viable method for various applications and products. Our latest example:
The COVID-19 pandemic tested the capabilities of global healthcare. Supply chains were disrupted, requiring local, flexible solutions for certified medical devices. See how EOS SLS 3D printing helped mass produce 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: Experience in 3D Printing since 1989

1700 Installed Base
in Different Industries
33 Years
in SLS 3D  Printing
16 Material & Proven Processes
For our 
SLS 3D Printers

SLS systems for every 3D printing need

Are you looking for an Selective Laser Sintering 3D printer for your production? EOS offers a wide range of SLS 3D printers tailored to your individual needs - from compact systems to modular and digitally networked 3D printing platforms for serial production on an industrial scale.

SLS 3D Materials for Plastics 3D Printer

The right material is critical for a good result in selective laser sintering. At EOS, we have exceptional material expertise and a comprehensive portfolio of advanced plastic and polymer 3D printing materials for the 3D printing process.
The most common material for selective laser sintering is nylon, also known as polyamide. Parts made from nylon are robust, long-term stable, chemically resistant and extremely versatile. At EOS, we offer two versions of nylon: PA 11 (Polyamide 11) and PA 12 (Polyamide 12).
In addition to these standard plastics, EOS is also constantly developing its range of high-tech materials for special customer requirements, such as the flexible TPU or high-temperature PAEK (polyaryletherketone).

Get your personalized offer now

Vanessa Seidenschwarz -  Product Line Manager Polymer Materials EOS GmbH
Vanessa Seidenschwarz
Product 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
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What's coming up next? The future of SLS 3D printing