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Selective Laser Sintering (SLS)

How does SLS 3D Printing work?


Selective Laser Sintering (SLS) is a 3D printing process that utilizes a powdered material. The model is sliced into thin layers. In SLS, a thin layer of the powdered material is spread across a build platform. A high-powered laser selectively scans and fuses the powdered material, solidifying it layer by layer according to the sliced design. Once a layer is completed, a fresh layer of powder is spread over the previous layer, and the process continues until the object is fully formed. After printing, the excess powder acts as a support structure, which can be easily removed after cooling.


SLS offers the advantage of producing complex, durable, and functional parts, making it suitable for applications in aerospace, automotive, and manufacturing industries. Additionally, the versatility of SLS allows for the printing of multiple objects simultaneously, making it a time-efficient process.

Selective Laser Sintering Capabilities

Maximum Part Size Tolerances Layer Height Standard Lead Time
Industrial SLS
200 x 250 x 330 mm (7.9 x 9.8 x 13 in.)
± 0.3% with a lower limit: ± 0.25 mm (0.01 in)
From 4 business days

Pros and Cons of Choosing SLS



Type of Feature Recommended Minimum
Minimum Hole Size
1 mm (0.0393in)
Minimum Clearance
0.6mm (0.023622in)
Minimum Wall Size
1.0mm (0.0393in)
Maximum Wall Size
25mm (1in)

Designing for SLS

Keep in mind the recommended minimums for each feature when designing for sls 3d printing. Following the recommended guidelines allows for a better part in the end!