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SLS nylon bracket

Selective Laser Sintering 3D printing service

Upload your CAD files, receive an instant Selective Laser Sintering 3D printing quote and get your parts into production in less than 5 minutes.

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Functional prototypesEnd-use partsLead times from 3 days

What is Selective Laser Sintering?

Selective Laser Sintering (SLS) is an industrial 3D printing process ideal for manufacturing end-use parts.

In SLS, a laser selectively sinters polymer powder particles, fusing them together and building a part layer-by-layer.

SLS produces functional plastic parts with isotropic mechanical properties that can be used for detailed prototyping or end-use low-volume production.

Our SLS 3D printing service

From prototyping to small-batch production, our global network of certified SLS 3D printing facilities will allow you to produce highly accurate parts with quality and strength comparable to injection molding.

Upload your CAD file for a free quote and manufacturability review and get your parts into production in less than 5 minutes.

Standard capabilities Description
Maximum build size * 395 mm x 500 mm x 395 mm (15.53" x 19.68" x 15.53")
Lead time * 33 business days
Dimensional accuracy ± 0.3% with a lower limit of ± 0.3 mm (± 0.012”)
Layer thickness 100 μm

* For expedited lead times or parts that exceed the maximum build size contact

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Available materials for SLS 3D Printing

SLS produces parts from a very wide range of engineering thermoplastics. Here is a list of the SLS materials available on Hubs.

Material Description
Nylon 12 (PA 12) SLS nylon is a robust thermoplastic with all-around excellent physical properties, ideal for functional prototypes and end-use applications.
Glass-filled Nylon (PA 12 GF) Glass-filled SLS nylon is reinforced with glass beads creating parts with higher stiffness and thermal stability than standard nylon.

Available surface finishes for SLS 3D printing

Additional post processes can be applied to improve the appearance or mechanical properties of parts produced with SLS. Learn more about the post-processing option for SLS in our Knowledge Base article.

  Finish Description
SLS nylon as-printed white As printed As printed SLS parts are typically white or stone grey in color with a smooth surface and a powder texture and without visible layers.
SLS finish tumbling Tumble smoothing * The parts are placed in a tumbler that contains small ceramic chips, gradually eroding its surface down to a polished injection molding-like finish.
SLS nylon dyed black Dyed (black) SLS parts are dyed black by immersion in a warm color bath. The color penetration reaches a depth of about 0.5 mm and covers all surfaces.
SLS spraypainting Spray painting * SLS parts can be painted white, black or in a specified RAL or Pantone color.

* These finishes are available by contacting

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Ideal SLS applications

Our in-house manufacturing experts recommend using SLS for the following use cases.

Functional prototyping

SLS is ideal for fabricating functional prototypes from durable, chemically resistant engineering thermoplastics.


Strength: Medium/High

Appearance: Smooth surface

Quantity: 1-5 parts

SLS rapid prototyping service

Low-volume production

SLS is cost-competitive to injection molding for low-volume manufacturing of end-use plastics parts for quantities up to 300 units.


Strength: Medium/High

Appearance: Injection molding-like

Quantity: 10-300 parts

High-performance components

SLS can produce optimized parts from advanced polymer composites that can be used as replacements to metal components.


Strength: High

Appearance: Smooth surface

Quantity: 1-50 parts

Neil Gilbody Neil Gilbody Sales Director EU
Jennifer Kaari, US Strategic Account Manager Jennifer Kaari US Strategic Account Manager
David Nguyen, EMEA Sales Engineer David Nguyen EMEA Sales Engineer

For businesses of all sizes

Get in touch with our team to access these services:

  • Add Hubs as a vendor
  • ISO 9001, material certifications, test reports and full dimensional reports
  • Non-disclosure agreements
  • Urethane casting and part marking
  • Sample verification program (learn more)
  • Dedicated account manager

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Design guidelines for SLS

The table below summarizes the recommended and technically feasible values for the most common features encountered in 3D printed parts.

Feature Recommended size
Unsupported walls 1.0 mm (0.040'')
Supported walls 0.8 mm (0.031'')
Minimum detail size 0.8 mm (0.031'')
Minimum hole size 1.0 mm (0.040'')
Moving parts 0.5 mm (0.020'') between moving surfaces
Assembly clearance 0.4 mm (0.016'') between mating surfaces
Maximum wall thickness 20 mm (0.8''). Thicker parts must be hollowed with and at least two escape holes for powder removal with a min. diameter of 8 mm (0.3'').

Learn how to design for SLS in our Knowledge Base article.

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