Introduction of SLS

Selective laser sintering (SLS) is a common 3D printing powder melting technology that produces parts that have superior properties, similar to injection molded parts. Fig. 1 is a schematic diagram of the SLS printer.

SLS technology uses a sled to lay a layer of powdered material on the upper surface of the formed part. The temperature is heated before sintering. The laser beam scans the powder according to the cross-section profile, raising the temperature to the melting point and promoting the formation of a bond between the sintered part and the molding mold. The above process is repeated to carry out multi-layer sintering integration until the sintering of the entire model is completed.

Schema of the SLS printer. Fig. 1.Schema of the SLS printer.(Gueche YA.; et al., 2021)


CD BioSciences is a technology company that provides 3D printing services to global customers in various industries, providing integrated solutions including 3D printing materials, software, and technology platforms. CD BioSciences offers SLS technology services that combine functionality, strength and complexity.


One of the biggest differences between SLS and other technologies (such as FDM, SLA) is that there is no specialized support structure needed. Because the unfused powder remains in place, it supports the parts during the printing process. A complex internal structure and integrated molding can be made without removing the support structure.

SLS is the most commonly used technology in industrial applications, capable of manufacturing high-precision, complex structure, and solid durability parts at a low single cost and with high consumable utilization.

With the development of SLS technology, numerous materials can be used with this technology. CD BioSciences offers various materials with different properties to support your specific printing needs.

  • Nylon materials: PA11, PA12
  • Nylon composites: Nylon materials filled with carbon fiber or glass fiber
  • Elastic thermoplastic materials such as TPU
  • Ceramic materials

Applications of SLS

SLS technology is a hot choice for making functional parts such as enclosures, clasps, movable hinges and joints. At the same time, because of the diverse properties of matched materials, SLS technology is widely used in different industries.

  • Aerospace industries
  • Automobile industries
  • Consumer goods

Advantages of SLS

  • No support material is required.
  • Extensive material selectivity
  • High material utilization rate, and unsintered materials can be recycled
  • The finished products are durable and of high precision
  • Make complex structures
  • Print fast
  • Reduce the cost
  • Increase manufacturing flexibility

SLS printing is a technology that uses a CAD model-controlled laser to fuse powder materials to form rigid 3D parts, and it is one of the preferred techniques for creating high-precision, high-mechanical parts. CD BioSciences has an experienced expert team to provide professional SLS technical service, and is trusted by engineers and manufacturers in different industries.

If you are interested in our services, please contact us. All services are available on a 24/7/365 basis.

For research use only, not intended for any clinical use.