Strong, support-free nylon parts for engineering, production, and functional applications. SLS is the professional's choice for reliable, isotropic parts without post-processing headaches.
Browse All SLS Services →SLS sinters nylon powder into solid parts using a high-powered laser — no liquid resin, no support structures, no meaningful constraint on geometry. The powder bed holds the part in place during printing, which means you can print interlocking assemblies, internal channels, living hinges, and undercuts that would be impossible to extract from a support-dependent process. When the build finishes, you excavate parts directly from the powder cake.
The mechanical result is different from FDM in a specific and important way: SLS parts are isotropic, meaning they're just as strong in every direction. FDM parts are inherently weaker along the Z axis because layers are fused, not sintered. That distinction matters for anything going into real-world use — which is why SLS has become the dominant process for end-use production parts across aerospace, automotive, and medical device applications.
Test form, fit, and function with parts that behave like production components — not just visual models.
Low-to-medium volume production of functional components without expensive injection mold tooling.
Print interlocking parts, snap fits, living hinges, and assemblies that can't be made with support-dependent processes.
Ducting, brackets, housings, and under-hood components that need chemical resistance and thermal stability.
Biocompatible PA12 is used for orthotic devices, prosthetic components, and custom medical tools.
Footwear, wearables, and consumer goods benefit from SLS's ability to produce flexible and rigid parts in one build.
SLS produces parts with superior mechanical properties compared to FDM and much larger build volumes than SLA. The trade-off is higher cost per part and that SLS is only available at professional service bureaus — you won't find it at a typical makerspace. For metal parts, see metal 3D printing.
Browse 120+ SLS print bureaus across the United States.
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