Online Custom SLS Selective Laser Sintering 3D Printing Services

LS Manufacturing provides reliable SLS 3D printing, sintering nylon powder with high-power lasers to produce strong, complex parts with excellent mechanical properties for demanding functional applications.

  • Precision Laser Sintering — robust, support-free complex geometries and integrated designs
  • Engineering-Grade Materials — including PA12, PA11, and glass-filled nylons for strength and stability
  • Comprehensive Quality Assurance — ensuring consistent properties, accuracy, and isotropic performance
  • Complete Post-Processing — with media tumbling, dyeing, and sealing for enhanced finish
  • Rapid Production Turnaround — delivering functional prototypes and end-use parts in 3-5 business days

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Trusted by Engineers and Purchasing Leaders at the World's Most Successful Companies

15+Years Specialized Experience
500,000+Precision 3D Printed Parts
10,000+Prototypes & Production Runs
99.8%On-Time Project Delivery
ISO9001:2015 Certified

Trusted bynumerous companies

ABB
BMW
Bombardier
Electrolux
FLIR
Google
I-Dent
Lamborghini
Tesla
ABB
BMW
Bombardier
Electrolux
FLIR
Google
I-Dent
Lamborghini
Tesla

LS Manufacturing delivers industrial-grade additive manufacturing solutions with ±0.1% dimensional accuracy, backed by 15+ years of specialized expertise, dual ISO/AS9100 certification, and a 99.5% on-time delivery record for rapid prototyping and end-use production.

SLS 3D Printing ServicesWith LS Manufacturing

SLS 3D printing machine in operation with laser sintering powder bed

Support-Free Complex Structure Forming

Laser-sintered powder requires no additional supports, enabling topology-optimized structures, lattice infills, and hollow designs, significantly reducing post-processing steps.

Industrial-Grade Material Compatibility

Supports materials such as nylon, carbon fiber-reinforced nylon, and glass fiber-reinforced nylon, meeting performance needs for wear resistance, high-temperature tolerance, and high strength.

Batch Precision Stability

Full-field constant-temperature sintering system paired with online density monitoring ensures consistent mechanical performance and dimensional accuracy across batch parts, with a yield rate of over 97%.

Closed-Loop Quality Control

Critical parts come with mechanical performance test reports and material traceability certificates, meeting compliance requirements of aerospace, medical, and other industries.

What isSLS 3D Printing?

SLS (Selective Laser Sintering) is an industrial-grade additive manufacturing technology that uses high-power lasers to selectively sinter powder materials such as nylon, building solid parts layer by layer.

Capable of forming complex structures without supports, parts exhibit excellent mechanical performance and weather resistance.

SLS General Tolerances

DescriptionTolerance Notes
General Tolerances

SLS Nylon 12 and variants are ±0.015", or ±0.002" per inch, whichever is greater.

SLS Nylon 11 and variants are ±0.020", or ±0.003" per inch, whichever is greater.

Results are typical, suitable for low-to-medium volume production.

Build Area

Build area up to 13"×13"×20". Glass filled materials can extend up to 26"×15"×23".

Minimum Feature Size

0.030" or greater.

Standard Layer Thickness

0.12 mm / 0.047"

This table provides a general tolerance reference for selective laser sintering. Build stresses and geometry (e.g., thick walls, flat parts) may lead to deviations or warpage. For tighter tolerances, submit your design for manual review. General tolerances apply before secondary post-processing unless agreed otherwise.Contact us for more information on tolerances per process.

Contact us for more details

Selective Laser Sintering(SLS) Materials

PA 11 Black (PA 850) offers high ductility and flexibility while maintaining excellent tensile strength and temperature resistance, making it a versatile general-purpose material for functional and dynamically loaded moving parts.

Primary Benefits

  • One of the highest elongation-at-break values among additively manufactured nylons
  • Uniform deep-black finish that highlights features and delivers a clean, professional appearance

Boasts balanced all-around mechanical properties and chemical resistance, with highly isotropic performance, making it ideal for functional parts and prototype development.

Primary Benefits

  • Highly isotropic mechanical properties ensure structural stability for complex load-bearing components
  • Cost-effective material choice that balances performance and economy

A go-to general-purpose unfilled nylon for functional and end-use parts. It exhibits the highest strength among unfilled nylons, with slightly higher stiffness than PA 11 Black.

Primary Benefits

  • Economical and practical material for production-scale applications
  • Excellent balance of strength and stiffness for structural load requirements

A sustainable, cost-effective material made from recycled powder. It features an off-white hue and mechanical performance nearly identical to PA 12 White, with high impact resistance, temperature stability, and near-isotropic properties, making it an excellent choice for functional and prototype parts.

Primary Benefits

  • Sustainable manufacturing solution using recycled raw materials
  • High durability and environmental stability for demanding operating conditions

A 25% mineral fiber-filled PA 12 powder. The mineral content significantly increases stiffness and heat deflection temperature (HDT up to 184°C), making it an ideal choice for applications requiring high stiffness and temperature resistance.

Primary Benefits

  • One of the stiffest additively manufactured nylons available
  • Excellent temperature resistance for high-temperature operating environments

A PA 12 powder loaded with 40% glass spheres, providing high stiffness and dimensional stability, ideal for long-term wear applications. The glass additive reduces impact and tensile strength compared to unfilled PA 12.

Primary Benefits

  • Superior long-term wear resistance for high-friction scenarios
  • Significantly improved structural stiffness and dimensional stability

Offers industry-leading chemical resistance among SLS and MJF materials, withstanding most acids. This tough, durable yet flexible material is also lightweight, expanding its application range.

Primary Benefits

  • Industry-leading chemical resistance for harsh chemical environments
  • Lightweight, high-toughness construction combining durability and flexibility

A white thermoplastic polyurethane that combines rubber-like elasticity and elongation with excellent abrasion and impact resistance. Its rubber-like properties make it ideal for seals, gaskets, grips, hoses, and other applications requiring dynamic load resistance.

Primary Benefits

  • High elongation at break for large-deformation applications
  • Excellent flexibility and impact resistance for dynamically loaded components

Compare SLS Material Properties

MaterialColorTensile StrengthTensile ModulusElongation
PA 11 Black (PA 850)Black7.54 ksi261 ksi30%
PA12 BlackDyed Black6.7 ksi276 ksi13%
PA 12 White (PA 650)White7.25 ksi290 ksi11%
PA12 ValueOff White6.7 ksi276 ksi13%
PA 12 Mineral-Filled (Duraform HST)Light Gray5.51 ksi450 ksi3%
PA 12 40% Glass-Filled (PA 614-GS)White7.25 ksi522 ksi5%
Polypropylene NaturalNatural2.61 ksi123 ksi15%
TPU 70-AWhite580 psi210%

Performance values in this table are approximate, influenced by equipment and process parameters, for professional reference only. For critical performance applications, independent laboratory testing of materials or parts is recommended.

SLS Finishes at LS Manufacturing

Standard

Process Description: Combines high-pressure sandblasting with precision manual powder removal to thoroughly eliminate residual surface powder; accessible internal holes support precision reaming.

Surface Effect: Uniform matte finish (fine granulated sugar texture)

Key Benefits: High baseline surface consistency, ideal for industrial components requiring cleanliness

Color Dyed

Process Description: Offers multiple color options including black, blue, green, red, and yellow. Black exhibits the best batch stability, with dye penetration depth precisely controlled at 0.010". Optimized parameters minimize batch-to-batch color variation.

Surface Effect: Uniform color saturation and stable hue

Key Benefits: Excellent color consistency, suitable for high-end appearance requirements

Vapor Smoothing

Process Description: Utilizes AMT PostPro3D automated chemical vapor technology. Controlled vapor flow transforms the surface from matte to semi-gloss, sealing surface pores.

Surface Effect: Semi-gloss sealed surface with fully closed pores

Key Benefits: Enhances impact resistance, supports secondary dyeing, ideal for production-grade appearance needs

Media Tumbling

Process Description: Adds abrasive media tumbling after standard finishing to precisely eliminate print layer lines and soften sharp edges. Tumbling parameters can be customized based on part geometry.

Surface Effect: Uniform eggshell texture with no visible layer lines

Key Benefits: High surface consistency for complex structural parts, suitable for precision assembly scenarios

Nickel Plating

Process Description: Adopts a "copper undercoat + nickel topcoat" electroplating process, with plating thickness precisely controlled at 0.004"–0.006". Features a functional rough nickel layer.

Surface Effect: Matte rough nickel finish

Key Benefits: Significantly improves durability, stiffness, and wear resistance, ideal for high-load industrial components

Additional Finishes

Process Description: Customized solutions available for high-end scenarios such as aerospace and medical, including precision polishing, conductive coating, and wear-resistant coating.

Key Benefits: Full-scenario compatibility, meeting both compliance and functional requirements

Vapor Smoothing for SLS 3D Printed Parts (Precision Grade)

We employ AMT PostPro3D automated batch vapor smoothing technology, achieving ≥95% surface pore closure via controlled chemical vapor flow. This creates a uniform semi-gloss sealed surface that rivals injection-molded parts in appearance and functionality, meeting stringent requirements for various high-end scenarios.

The process enhances surface aesthetics and significantly optimizes mechanical performance: increasing ultimate tensile strength by 10%-15% and elongation at break by 15%-20%, improving durability and impact resistance. Treated parts support secondary dyeing, are compatible with SLS, MJF, FDM, and all material types, providing an integrated surface solution for high-end manufacturing.

Vapor smoothed SLS 3D printed part showing precision grade surface finish

Trusted SLS 3D Printing Quality

Your project success depends on consistent, reliable parts. Our SLS 3D printing services deliver precision manufacturing, ensuring performance consistency for every component, and providing solid support for prototype validation and production delivery.

SLS 3D printing quality control — certified production facility
SLS 3D printing quality inspection with CMM measurement
SLS 3D printed parts quality assurance process
SLS precision manufacturing quality verification

Certifications

Our production facilities are certified to ISO 9001, ISO 13485, and AS9100D, adhering to the highest international standards for quality and compliance, providing quality assurance for all high-end requirements.

Expertise

Backed by a seasoned technical team and industry-leading equipment such as AMT PostPro3D, combined with precision tools like CMM inspection, we ensure dimensional accuracy and performance stability for every part.

Transparent Process

From material incoming to final inspection, every stage follows strict quality control procedures. Full traceability and documented checks give customers worldwide confidence in every delivery.

Learn More About Quality Assurance

Why Choose JS Precision as Your SLS 3D Printing Manufacturer?

With LS Manufacturing's SLS 3D printing services, you get high-standard quality assurance, stable and controllable lead times, and end-to-end custom solutions for all high-end precision projects.

SLS 3D printing quality assurance — CMM precision inspection facility

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Quality Assurance

Our production facilities are ISO 9001/13485/AS9100D certified, combined with professional CMM precision inspection and performance testing, to ensure high-precision dimensional control and consistent mechanical properties for every part.

SLS 3D printing fast reliable delivery — industrial production facility

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Fast & Reliable Delivery

Optimized industrial production workflows and batch processing capabilities ensure stable and controllable lead times, with most precision projects delivered within 7–10 business days.

SLS 3D printing customization support — engineering team at work

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Customization Support

Our senior engineering team provides full-cycle customization support, including DFM optimization, professional material selection, and custom process development, to accurately adapt to various complex precision design requirements.

ADVANTAGES

Key Advantages of SLS 3D Printing

SLS 3D printing delivers a robust set of engineering benefits that elevate precision manufacturing capabilities, supporting both high-end prototyping and production-grade part requirements.

Key advantages of SLS 3D printing — precision manufactured part
  • Exceptional Durability & Environmental Resistance

    Engineered nylon materials deliver outstanding impact strength, balanced flexibility, and high resistance to environmental factors, ensuring long-term performance in demanding operating conditions.

  • Accelerated Lead Times & Rapid Iteration

    Automated batch processing enables most parts to be shipped within 3–4 business days, facilitating faster design iterations and reducing time-to-market for high-precision projects.

  • Production-Ready End-Use Parts

    SLS technology enables on-demand production of fully functional, end-use parts with mechanical properties comparable to traditional manufacturing, eliminating the need for post-processing in many cases.

  • Complex Geometry Without Added Cost

    The 3D printing process eliminates tooling constraints, allowing intricate contours, undercuts, and lattice structures to be integrated into designs without additional expense or lead time.

  • Flexible Scalability From Prototypes to Production

    SLS seamlessly scales from single prototype parts to medium-to-high volume production runs, maintaining consistent quality and performance across all batch sizes.

  • Precision Tolerance Control

    Leveraging next-generation SLS technology, we achieve tight tolerances of ±0.010" or ±0.002" per inch (whichever is greater), ensuring dimensional accuracy for critical applications.

APPLICATIONS

SLS 3D Printing for Diverse Industrial Applications

SLS 3D printing delivers high-performance, production-ready components for a wide range of demanding industrial sectors, leveraging its ability to create complex geometries and durable nylon parts.

Concept Modeling & Design Validation

SLS enables rapid creation of physical design snapshots, allowing engineering teams to validate form, fit, and early-stage functionality before committing to tooling—critical for high-value industrial projects.

Functional Prototyping & Rapid Iteration

Produce fully functional prototypes with mechanical properties matching production materials, including integrated hinges, gears, and complex assemblies, to accelerate design cycles for aerospace and medical applications.

Direct Digital Manufacturing for End-Use Parts

Manufacture durable, end-use components on demand, eliminating inventory costs and lead times for low-to-medium volume production of critical parts such as aerospace brackets and medical device components.

Complex Tooling & Jigs

Create high-wear, complex geometry jigs, fixtures, and molds with tight tolerances, supporting downstream processes like injection molding and assembly for precision manufacturing environments.

High-Performance Aerospace Components

Produce lightweight, high-strength structural components, turbine blades, and avionics housings that meet rigorous performance and reliability standards for aerospace and defense applications.

Medical Device Prototypes & Components

Fabricate biocompatible, patient-specific prototype implants, surgical tools, and device components, ensuring precision and surface quality that meet strict medical regulatory requirements.

Aerospace SLS 3D printing application

Aerospace

Medical devices SLS 3D printing application

Medical Devices

Automotive SLS 3D printing application

Automotive

Robotics SLS 3D printing application

Robotics

Industrial tooling SLS 3D printing application

Industrial Tooling

Automation SLS 3D printing application

Automation

Latest News

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SLS 3D Printing FAQs

We provide a range of industrial-grade materials, including ISO 13485 certified biocompatible nylon, glass-filled nylon for enhanced rigidity, and high-temperature resistant formulations suitable for aerospace and medical use cases.

Yes, SLS technology eliminates tooling constraints, allowing intricate undercuts, lattice structures, and internal channels to be integrated into designs without additional cost or complexity.

We offer advanced post-processing including vapor smoothing for sealed, semi-gloss surfaces, precision nickel plating for wear resistance, and custom dyeing for consistent color matching.

Our facilities are ISO 9001, ISO 13485, and AS9100D certified, ensuring alignment with global quality and regulatory requirements for high-risk industries.

Yes, our senior engineering team offers full-cycle support including DFM (Design for Manufacturability) optimization, material selection guidance, and custom process development for complex high-end designs.

We provide comprehensive mechanical testing (tensile, flexural, impact) and environmental testing to verify part performance under real-world operating conditions.

Absolutely. Our SLS parts deliver mechanical properties comparable to traditional manufacturing, making them ideal for durable, production-ready end-use components.

Yes, we can collaborate on custom material development to meet unique performance requirements, such as enhanced chemical resistance or biocompatibility.

We maintain detailed process documentation, traceability, and third-party audits to ensure full compliance with medical, aerospace, and defense regulatory standards.

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