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SLS 3D printing services

Equipped with advanced SLS 3D printers and extensive thermoplastics materials, we can deliver high-strength, precision complex functional parts in a short period of time. Whether for prototyping, functional testing, or end-use production, our experienced team provides expert solutions to help you overcome design bottlenecks and achieve efficient production of your ideal parts.

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What is SLS 3D Printing?

SLS 3D Printing (Selective Laser Sintering) is a industrial-grade additive manufacturing technology. It utilizes a high-power laser (e.g., CO₂ laser) to selectively sinter thermoplastic powder layer by layer based on sliced CAD data. The laser heats the powder particles to their sintering temperature, fusing them into solid layers that are built up sequentially to form 3D parts with strong mechanical properties.

The process does not require additional support structures, as the unsintered powder naturally supports the part during printing. SLS 3D printing is highly suitable for manufacturing parts with high precision and complex structures, and is widely used in various fields.

How does SLS 3D Printing Work

How does SLS 3D Printing Work？

SLS 3D printing starts by slicing the 3D model, setting the layer thickness to meet accuracy and surface quality requirements, and sending the data to the SLS printer.

In the initial stage, the recoating system spreads a thin layer of powder over the powder bed. Based on the slicing data, the laser performs selective scanning on the powder surface, heating and sintering the powder to form the first layer of moulding. Subsequently, the powder bed lowers by a set layer height, the feed system spreads a new layer of powder, and the laser continues scanning the next cross-section.

Through repeated powder spreading and sintering, the 3D component is gradually built. Finally, the part is manually removed, excess unsintered powder is cleaned off, and necessary post-processing steps are performed.

Typical Applications of SLS 3D Printing

Eyewear Frames

Eyewear Frames

Orthotic Braces

Orthotic Braces

Athletic Shoe Midsoles

Athletic Shoe Midsoles

Custom Tooling Fixtures

Custom Tooling Fixtures

Advantages of xmake SLS printing

  1. Efficient Mass Production

    SLS 3D printing enables intelligent part arrangement in the build chamber, allowing multiple components to be printed in one run. This maximizes space use, boosts efficiency and cuts costs—ideal for small to medium batches of prototypes and custom parts.

  2. No Support Structure Required

    In the SLS 3D printing process, unsintered powder can support the part without the need for extra support structures. Compared to FDM and SLA, this not only saves the time of removing supports but also reduces the risk of surface damage during the removal process.

  3. Supporting Complex Structures

    SLS technology can easily complete complex geometries structures - including lattices, hollow structures, and interlocking assemblies - that challenge conventional manufacturing. With unmatched design flexibility, it's the ideal solution for innovative structural components.

  4. High Material Recycling Rate​

    SLS 3D printing features a powder recycling system. Unsintered powder can be reused after impurity screening, reducing material waste and lowering raw material procurement costs compared to other technologies.

  5. Excellent Mechanical Properties

    SLS 3D printing can produce components with exceptional strength, toughness, and durability. It is ideal for the rapid manufacturing of functional test parts, structural load test pieces, and high-performance structural components.​

  6. Wide Material Selection​

    SLS 3D printing is compatible with various high-performance materials, such as nylon, TPU, and reinforced composites. It can meet production needs for parts with special properties, and is widely used in fields like the medical industry and auto manufacturing.

Start your parts now

If you have any questions about whether your project is suitable for SLS 3D printing, please feel free to contact us. We are equipped with a wide range of advanced 3D printing processes and can provide you with the most appropriate technical advice and production solutions for your specific needs.

SLS 3D Printing Tolerances

Max. Build Size 380x280x380mm
Layer Height 100–120 microns
Minimum Feature Size 0.5 mm
Minimum Wall Thickness 0.7 mm– 2.0 mm
Dimension Tolerance ±0.2 mm (<100 mm),
±0.3% (>100 mm)
Sandblasting Blasting fine sand particles onto the surface of the part to remove surface burrs and improve surface quality.
Polishing Mechanical or chemical polishing to make the surface of the parts smoother.
Heat treatment Improve the strength and stability of the parts by heat treatment process.
Colouring / dyeing To beautify the appearance of parts by dyeing and painting.

SLS 3D printing post-processing

Why Choose xmake SLS 3D Printing

Advanced Equipment

We are equipped with high-precision, multi-model SLS printers, capable of meeting production needs for parts of different sizes and complexities. We strive for high-quality manufacturing for customers from design to finished products.

Extensive Materials

We provide a variety of engineering-grade materials (nylon, reinforced composite, Flexible TPU etc.) to meet the production requirements of different properties. We strive to complete high-performance parts for our customers.

Rigorous Quality Control

Our strict quality control spans modeling, printing, post-processing, and other stages to ensure every product meets production requirements. We strive to provide our customers with high-quality, precise and durable parts.

Expert Technical Consulting

We have an experienced team that can provide professional advice, Whether it’s technical difficulties in the manufacturing process, confusion in material selection, or other related issues, we are committed to providing effective solutions.

Start your manufacturing project

Our 3D printing capabilities

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