SLS 3D Printing

SLS 3D Printing Services in Canada

SLS (selective laser sintering) fuses nylon powder with a high-power laser, building production-grade parts with isotropic mechanical properties and no need for support structures. SLS is the workhorse of low-volume nylon production — geometric complexity is essentially free, parts nest densely in the build chamber, and the material is real engineering nylon, not a UV-cured photopolymer.

Canadian supplier network ISO 9001:2015 Vetted suppliers

SLS 3D Printing in Canada

SLS is the production process of choice for nylon parts that need real engineering performance and complex geometry without the cost of injection molding tooling. A high-power laser sinters nylon powder layer by layer, building parts inside a bed of unfused powder that supports overhangs and complex internal features.

Where SLS Wins

Low-volume production. Below the volume where injection molding tooling pays back, SLS produces real nylon parts with real mechanical performance.

Complex geometry. Internal channels, lattice structures, integrated assemblies, and undercuts are essentially free in SLS — there is no tool path constraint, no draft angle requirement, and no support structure to clean up.

Functional prototypes that match production. When the production part will be injection-molded nylon, SLS prototypes give you the closest mechanical match available without committing to tooling.

Aerospace and medical applications. AS9100 and ISO 13485-certified Canadian SLS shops produce flight-qualified and medical-grade parts in PA11, PA12, and filled variants.

SLS Material Range

PA12 — workhorse general-purpose engineering nylon. PA11 — bio-based, slightly tougher, often preferred for impact applications. Glass-filled and carbon-filled — stiffer, higher heat-deflection, suitable for structural parts. Flexible TPU / PEBA — elastomeric parts that flex and rebound. Flame-retardant PA12 — aerospace and rail interior applications.

When to Move Off SLS

For visual prototypes and surface-detail work, SLA wins. For higher-volume nylon production, MJF is faster. For metal parts, route to DMLS instead.

Specifications

SLS 3D Printing at a Glance

Certifications
  • ISO 9001:2015
  • ISO 13485 (select shops)
  • AS9100 (select shops)
Tolerances
Standard
+/- 0.3 mm or +/- 0.3%
Precision
+/- 0.1 mm (small features)
Lead Times
Prototype
3–5 business days
Production
5–10 business days
Network
Closed Beta

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Available Materials

PA12 (Nylon 12) PA11 (Nylon 11, Bio-based) PA12 GF (Glass-filled) PA12 CF (Carbon-filled) Aluminum-filled Nylon TPU / TPE (Flexible) PEBA (Elastomeric) PA12 Flame-retardant

Industries We Serve

Aerospace
Automotive
Medical Devices
Consumer Products
Industrial Equipment
Sports & Outdoor

Frequently Asked Questions

How is SLS different from FDM?
SLS uses a laser to fuse powder, producing isotropic parts (equal strength in all directions) with no support structures needed and complex internal geometry essentially free. [FDM](/manufacturing/3d-printing/fdm/) extrudes filament with anisotropic strength along layer lines and requires support material for overhangs. SLS is more expensive per part but better suited to production-grade, complex-geometry, low-volume manufacturing.
What's the difference between SLS and MJF?
Both fuse nylon powder. SLS uses a laser; [MJF (multi jet fusion)](/manufacturing/3d-printing/mjf/) uses a thermal print head with fusing and detailing agents. MJF is faster (better for higher volumes) and produces slightly better surface finish, but SLS has been the workhorse longer with broader material availability. Both produce strong, isotropic nylon parts. We route based on quantity, material, and lead time.
How does SLS PA12 compare to injection molded nylon?
SLS PA12 reaches roughly 70–85% of injection-molded PA12 mechanical properties, depending on orientation and post-processing. For low-volume production parts (under ~5,000 units per year) where injection molding tooling cost is not justified, SLS is often the right answer. Beyond that volume, injection molding wins on cost-per-part.
What surface finish does SLS produce?
As-printed SLS parts have a slightly grainy finish (similar to a fine sandpaper texture) due to the powder-particle base. Bead-blasting is standard. For smoother finishes, parts can be vapor-smoothed, dyed, or coated. We can quote raw, blasted, dyed, or coated finish options on every order.

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