USA & Canada
USA & Canada

Selective Laser Sintering (SLS)

Parts On Demand


What Is Selective Laser Sintering?

Selective Laser Sintering (SLS) is a way to build prototypes early in the design cycle or production parts in a wide variety of applications.

Selective Laser Sintering (SLS), also just known as Laser Sintering (LS), creates tough and geometrically complex components for batch or serial manufacturing in a wide variety of applications.

SLS production parts are strong, water and air-tight, heat resistant and repeatable.

Prototypes to Production Parts with SLS

This robust process can build parts for all stages of the production lifecycle, from prototyping to low-volume manufacturing opportunities.

SLS builds robust parts with filled Nylon materials, making it an ideal process for applications such as duct work, fuel tanks and brackets, as well as functional prototyping.

Go Beyond Conventional with Selective Laser Sintering

With the ability to produce complex features, under cuts and internal structures, SLS can consolidate multiple components with ease.

How Does Selective Laser Sintering Work?

SLS builds with a CO₂ laser that melts cross-sections of a CAD design in powdered material.

While being built, SLS parts remain encased in an unsintered powder bed, replacing the need for support structures.

Without support structures, designers can easily add undercuts and internal features and reduce post-processing time.

Selective Laser Sintering Quality Assurance

Our quality systems ensure consistent handling and recycling of materials along with machine maintenance and process control limits.

This provides material traceability, mechanical property verification, dimensional and other performance criteria checks to ensure the parts we deliver meet customer specifications repeatedly.

Engineering-Grade Selective Laser Sintering Materials

SLS provides a full range of engineering-grade thermoplastics well-suited for high requirement applications.

Selective Laser Sintering Materials

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Nylon 11 EX

Next generation Nylon 11 with the elongation and impact strength of the original but with better surface finish and feature definition

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Nylon 11 FR

Flame, smoke & toxicity (FST) certified Nylon 11 per FAR 25.853

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Nylon 11

Original high elongation and impact strength SLS material specified in many aerospace products

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Nylon 12 PA (SLS)

General purpose Nylon 12 with good surface finish and feature definition with less deformation than Nylon 11

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Nylon 12 FR

Flame, smoke & toxicity (FST) certified Nylon 12 per FAR 25.853

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Nylon 12 GF

Glass-filled Nylon 12 with higher tensile modulus & HDT

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Nylon 12 CF

Electrostatically dissipative with high strength-to-weight ratio

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Nylon 12 HST

High strength and high temperature mineral fiber-filled plastic

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Nylon 12 AF

Aluminum-filled Nylon 12 for the appearance of aluminum; also has electrostatic dissipative properties

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Selective Laser Sintering Applications

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Production Parts

SLS production parts can be strong, water and air-tight and made out of engineering-grade thermoplastics.

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Functional Prototyping

SLS is an ideal technology for complex components needed in functional prototyping.

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ECS Ducting

SLS produces strong, complex ducts with interior features using FST-rated materials with superior heat resistance.

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Trusted Precision with Selective Laser Sintering

Precise SLS parts result from more than machine operations; they take a team of experts dedicated to the technology.

At Stratasys Direct we work to validate all methods and materials in order to ensure perfect parts, every time.

Years of experience working with SLS has led us to develop excellent post-processing methods to offer functional and cosmetic component.

Selective Laser Sintering Experience in Your Corner

We have nearly thirty years in the industry and a team of engineers ready to assist with every step of your project.

With quality certifications ISO 9001 and AS9100 and ITAR registration, we won’t rest until your project requirements are met.

General questions? Engineering questions? Need help with your design?

Contact us

Frequently Asked Questions About Selective Laser Sintering

What geometries are best suited for SLS?

SLS is ideal for components with extremely complex geometries, including parts with internal cavities.

Parts that are produced with SLS remain encased in powdered material, which is self-supporting thereby eliminating the need for additional supportive structures on or within the components.

What level of detail can be obtained with SLS?

Selective Laser Sintering can produce a layer thickness of 0.004”- 0.006” and an X/Y resolution of 0.030” – 0.050”. We recommend all SLS parts have a minimum wall thickness of 0.040”.

See the SLS design guidelines for more details.

What is the largest part size you can make with SLS?

The build platform for our largest SLS machine is 26.5”x13.5”x20”. Parts that exceed those dimensions can be built in sections and bonded.

Bonding lines introduce a degree of consistency in regards to mechanical performance.

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