BFGarage · Leeds, West Yorkshire

SLS 3D Printing Service in Leeds

Selective Laser Sintering (SLS) 3D printing from our Leeds workshop. Production-grade nylon parts without support structures — the best additive technology for mechanically demanding applications, complex geometries, and functional assemblies.

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About This Service

SLS 3D printing uses a high-power laser to sinter nylon powder into solid parts, layer by layer. Because the unsintered powder supports the part during the build, no support structures are needed — which means highly complex geometries, interlocking assemblies, and living hinges are all achievable in a single print. The resulting nylon parts are tough, chemically resistant, and isotropic, making SLS the closest additive process to injection-moulded nylon in terms of mechanical performance. It is widely used for functional end-use parts, snap-fit assemblies, and production components in automotive, medical device, and consumer electronics applications. Our Leeds SLS service covers Nylon 12, Nylon 11, and glass-filled grades.

Key Advantages

  • No support structures — any geometry possible
  • Strong, isotropic nylon parts
  • Production-grade mechanical properties
  • Batch multiple parts in one build
  • Natural, dyed, or painted finish options
  • Shipped across the UK from Leeds

Common Applications

Functional end-use parts
Complex assemblies with internal features
Living hinges and snap-fit components
Ducting, manifolds, and fluid-handling parts
Low-volume production runs
Lightweight structural components

Materials Available

Nylon 12 (PA12) — general purpose, stiffNylon 11 (PA11) — tougher, more flexibleGlass-filled Nylon — increased stiffnessCarbon-filled Nylon — high strength
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Frequently Asked Questions

Why choose SLS over FDM for functional parts?
SLS produces isotropic parts — meaning they are equally strong in all directions — unlike FDM where layer adhesion creates a weak axis. SLS nylon also has better fatigue resistance, chemical resistance, and snap-fit performance than most FDM thermoplastics. For parts that will see real mechanical loads, SLS is usually the better choice.
Do SLS parts need support structures?
No — this is one of SLS's biggest advantages. The unsintered powder around each layer acts as its own support material. This allows undercuts, overhangs, internal channels, and nested assemblies that would be impossible or very costly in FDM or SLA.
What surface finish do SLS parts have?
SLS parts have a slightly grainy, matte surface texture from the powder sintering process. This is rougher than SLA but consistent across the whole part — there are no visible layer lines or support witness marks. Parts can be dyed, painted, or vapour-smoothed for improved appearance.
What is the lead time for SLS 3D printing?
SLS builds typically take one to two days for the print and cooling cycle, plus post-processing. Most orders ship within three to four business days. We batch parts from multiple orders in a single build where possible to keep costs down.

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