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SLS 3D Printing Services for High-Strength, Complex Components

Yicen Precision delivers advanced SLS 3D printing services engineered for durable, support-free parts with exceptional mechanical strength. Ideal for complex geometries and functional designs, our SLS process ensures superior accuracy, clean detail, and production-grade performance.

Rapid SLS production available. ISO 9001:2015 & AS9100D certified. Trusted for custom SLS 3D printing in engineering, aerospace, and product development.

SLS 3D Printed Parts
SLS 3D Printed Gears

Selective Laser Sintering (SLS) for High-Performance, Functional Parts

Selective Laser Sintering uses a precision laser to fuse nylon powder into strong, lightweight components with outstanding dimensional accuracy. Perfect for prototypes and end-use parts, our Selective Laser Sintering (SLS) workflow produces support-free, intricate shapes, making it ideal for mechanical testing, assemblies, and custom designs. Each build is optimized with reliable material control and consistent Nylon SLS 3D printing quality.

Industrial SLS Printing Services for Complex, Production-Ready Components

Our industrial SLS printing services allow you to create complex structures, internal channels, moving assemblies, and durable prototypes without support limitations. Using premium engineering powders, we deliver strong, functional parts for consumer products, automotive components, and industrial machinery. Every model benefits from stable powder sintering and smooth accuracy powered by reliable SLS powder bed fusion technology.

SLS 3D Printing Process

Materials for SLS

Engineers and leading manufacturers trust Yicen Precision for fast iterations and durable, high-performance parts. Whether for prototyping or full-scale production, our extensive material selection ensures precision, strength, and reliability for any CNC machining project.

Durable plastic
PA12
PA 2200

Stiff plastic
PA12 GF
PA 3200 GF

Ductile plastic
PA11
Rilsan® Invent Natural

High-performance plastic
Carbon-filled PA12
PA 602-CF
Carbonmide

Metallic gray plastic
Aluminum-filled PA12
Alumide

Heat-resistant plastic
Mineral fiber-reinforced PA12
PA 620-MF

Meets FAR 25.853 60-second burn specification
PA 606-FR

Surface Finishing for SLS

We offer surface finishing solutions designed to enhance the appearance, durability, and performance of your SLS parts.

Electroplating
bearings with electroplating finish

Deposits a thin metal layer onto SLA parts for improved appearance, strength, and EMI shielding. Suitable for display models and functional prototypes.

Assembly & Post-Processing
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We provide precise assembly of multi-component prints and thorough post-processing, including support removal, detail refinement, and fit adjustments, to ensure every part meets your specifications.

Clear Coating
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A transparent coating that protects SLA parts and enhances gloss or depth. Ideal for parts requiring a polished, durable, or water-resistant finish.

Epoxy Coating
precision patterns from 3d cad by cnc machining epoxy tooling board tutorial icon

Applies a clear or tinted epoxy resin to seal the surface, enhancing durability and giving parts a smooth, glass-like appearance.

UV Curing
1 as machined

An additional UV exposure process to fully cure SLA parts, improving mechanical strength, thermal resistance, and surface hardness.

Texturing
2 bead blast

 Custom textures can be applied to improve grip, reduce glare, or achieve a specific visual effect. Useful for ergonomic parts or components requiring a matte or non-slip finish.

Painting & Coating
cnc circularflange aluminum brokenedge

Applying primer creates a smooth, uniform base for painting. Custom paints can then be applied for color, UV protection, or enhanced aesthetics.

Sanding & Polishing
untitled design (14)

 Manual or machine sanding smooths the surface, while polishing delivers a clean, glossy finish. Ideal for presentation models, visual prototypes, and end-use parts.

SLS 3D Printing Services for Durable, Complex Plastic Components

Experience advanced SLS 3D printing, where precision, strength, and design freedom come together. From functional prototypes to production-grade assemblies, our custom SLS 3D printing delivers support-free parts with exceptional dimensional accuracy and robust mechanical performance. 

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Transform Concepts into Precision Parts

We specialize in converting your ideas into high-quality, functional components with unparalleled speed and accuracy. With advanced technology and expert craftsmanship, we create parts that meet the most complex specifications.

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Custom SLS 3D Printing – Process, Technologies & Challenges

SLS is one of the most powerful additive manufacturing technologies for making strong, lightweight, and functional parts. Below is the complete technical breakdown with long-tail keywords added naturally.

What Is Selective Laser Sintering (SLS)?

SLS is a laser-based 3D printing process that fuses powdered thermoplastics layer by layer to create solid, durable pieces. With no support structures required, it is ideal for custom SLS 3D printing parts online, complex geometries, interlocking designs, and fully functional components.

How SLS Technology Works (Step-by-Step)

1. Laser Scanning & Powder Fusion

A high-powered CO₂ laser selectively sinters layers of nylon powder according to the digital model. This technique enables the production of high-strength SLS 3D printed parts with excellent durability.

2. Powder Bed Fusion

A thin layer of powder is spread across the build chamber. The unsintered powder around the part acts as natural support, enabling complex geometry SLS printing without supports, a major advantage over FDM or SLA.

3. Material Flexibility

SLS commonly uses Nylon PA11, PA12, and composite powders (glass-filled, carbon-infused). These provide toughness, temperature resistance, and great mechanical performance suitable for SLS for functional testing and mechanical applications.

4. Powder Management & Recycling

Unused powder is reclaimed and recycled for future builds, making SLS a cost-effective and efficient process.

SLS Post-Processing Services

Once printing is complete, the parts undergo smoothing, bead-blasting, polishing, dyeing, or sealing. These SLS post-processing services enhance durability, remove powder residue, and improve aesthetics.

Common Challenges in SLS 3D Printing

1. Surface Finish

SLS parts often have a slightly grainy texture. Surface polishing or vapor smoothing is used to enhance appearance and achieve smoother results.

2. Material Limitations

While versatile, SLS materials might not suit extreme heat or hyper-flexible applications.

3. Warping & Shrinkage

Dimensional changes can occur during cooling. Proper temperature control and compensation prevent inaccuracies.

4. High Machine & Maintenance Costs

SLS systems are expensive to operate and require regular calibration, making them best suited for professional environments.

5. Slower Build Times for Large Parts

The powder bed fusion cycle can take longer for bigger volumes or dense geometries.

Why SLS Is a Preferred Choice for Engineering & Production

Support-Free Printing

No supports are required due to powder bed containment.

Superior Mechanical Strength

Ideal for prototypes and SLS for low-volume production.

High Design Freedom

Perfect for organic shapes, hinges, moving parts, and internal channels.

Excellent for Aerospace & Medical

High accuracy and good mechanical properties make it suitable for SLS 3D printing for medical and aerospace applications.

Cost-Effective for Production

With reusable powder and fast batch production, SLS is suitable for affordable SLS 3D printing services globally.

Yicen Machining Solutions

Whether you’re creating a small batch of custom parts or scaling up for high-volume production, Yicen machining services offer the flexibility you need.
Laser Tube cutting
Rapid Prototyping

CNC rapid prototype machining is perfect for creating engineering or production prototypes that closely resemble the final product in both appearance and functionality. At Yicen, we offer instant quotes and fast delivery, providing you with precise, high-quality CNC machined prototypes for your needs.

Laser Tube cutting
Low Volume Manufacturing

Low volume CNC machining often acts as a bridge between prototyping and mass production for new and emerging production. With Yicen, this process becomes easier, more efficient, and cost-effective, allowing you to scale production quickly while maintaining high-quality standards.

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End-use Production

CNC production machining is the best solution for producing a thousand parts or more efficiently. Leveraging a diverse selection of materials and automation and multi-axis capabilities, Yicen delivers high-volume production with tight tolerances, superior dimensional accuracy, high reliability and fast turnaround times.

Insights & Articles

Explore Machining services blog for expert insights on CNC machining, industry trends, manufacturing tips, and technology updates—designed to keep you informed, inspired, and ahead in precision engineering.

Frequently Asked Questions

SLS (Selective Laser Sintering)

  • How can I get a quote for SLS 3D printing at Yicen Precision?

    To receive a quote for SLS 3D printing, simply provide us with your design files (typically STL or OBJ format), the material preferences, and any specific requirements you may have for the project. Our team will review the design and provide you with a detailed quote, including the estimated cost, lead times, and any additional services you may require. We strive to offer competitive pricing and clear communication throughout the process.
     

  • How do you ensure the quality and accuracy of SLS parts?

    At Yicen Precision, we use advanced SLS machines equipped with precise calibration systems to ensure the accuracy and quality of each part. Our team performs strict quality control checks throughout the process, from the initial design review to post-processing. We also ensure that the selected material is best suited for the specific requirements of your project, whether you need parts that are strong, flexible, or heat-resistant.
     

  • What materials can be used with SLS 3D printing at Yicen Precision?

    At Yicen Precision, we offer a variety of materials for SLS 3D printing, including thermoplastic powders such as Nylon, Polyamide, and more advanced materials like glass-filled and metal-infused powders. These materials provide excellent strength, flexibility, and heat resistance, depending on the application. We work closely with clients to select the right material to meet their specific needs for functionality, durability, and performance.
     

  • Can SLS be used to create parts with complex geometries?

    Yes, SLS is especially well-suited for creating parts with complex geometries that would be difficult or impossible to achieve with traditional manufacturing methods. Because the material is sintered layer by layer, SLS can produce intricate internal structures, undercuts, and hollow features without the need for additional support structures. This makes SLS ideal for producing highly customized components and geometrically complex designs.
     

  • Can SLS 3D printing be used for both prototyping and final production?

    Yes, SLS can be used for both prototyping and final production. Its ability to produce strong, durable, and accurate parts makes it suitable for producing functional prototypes that can be tested and iterated quickly. Additionally, SLS is often used for small to medium-sized production runs, where traditional injection molding or machining methods may be cost-prohibitive. At Yicen Precision, we offer both prototyping and production services using SLS technology.
     

  • What types of parts are best suited for SLS 3D printing?

    SLS is particularly suited for creating durable, functional parts that require mechanical strength, flexibility, and thermal resistance. It’s ideal for producing prototypes, end-use parts, and complex geometries, including parts with internal structures or hollow sections. Common applications include automotive components, medical devices, industrial parts, and custom tooling. SLS is especially effective for low-to-medium volume production runs.
     

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