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Talk to an expertSLS 3D Printers
SLS (Selective Laser Sintering) 3D printers use a laser to selectively fuse powdered polymer material layer by layer, producing durable parts without the support structures typically required by filament or resin 3D printing. Because unfused powder supports the part during printing, SLS is particularly well suited to complex geometries, interlocking components, internal channels, and functional parts that would be difficult or impossible to produce using conventional support-based 3D printing.
3D Printing Canada supplies SLS 3D printers from Sinterit, with systems designed for professional prototyping, product development, engineering, and low-volume production.
Why Use SLS 3D Printing?
No Traditional Support Structures:
Unfused powder surrounds and supports the part during printing, allowing complex geometries and overhangs to be produced without adding conventional support structures.
Complex Geometries:
SLS is well suited to parts with internal channels, lattice structures, moving components, thin walls, and other complex features that can be challenging to produce using FFF/FDM or resin printing.
Durable Functional Parts:
SLS commonly uses engineering-grade polyamide and nylon powders to produce strong, functional parts suitable for prototypes, testing, assemblies, and end-use applications.
Efficient Part Nesting:
Multiple parts can be arranged throughout the powder bed and produced in the same build, making SLS useful for producing batches of components and maximizing available build volume.
Reduced Post-Processing Constraints:
Because parts do not require conventional support structures, post-processing can be focused primarily on removing excess powder and finishing the printed surface rather than removing extensive support material.
SLS 3D Printing Applications
Functional Prototypes:
Produce durable prototypes that can be handled, assembled, tested, and evaluated under conditions closer to those of finished products.
Engineering Components:
Create brackets, housings, ducts, enclosures, fixtures, and other functional components using suitable engineering-grade polymer powders.
Complex and Moving Assemblies:
SLS can produce interlocking components, articulated parts, lattice structures, and other geometries that may require extensive support structures with other 3D printing technologies.
Low-Volume Production:
Batch multiple parts within a single powder bed to produce short production runs and customized components without the tooling requirements of traditional manufacturing.
Product Development:
Produce functional prototypes and design iterations quickly, helping reduce development time before committing to injection moulding, machining, or other production processes.
Choosing an SLS 3D Printer
When selecting an SLS 3D printer, consider build volume, material compatibility, layer thickness, laser specifications, print speed, powder handling, powder refresh requirements, and the post-processing workflow required by the system.
Material selection is particularly important. Different polymer powders provide different combinations of strength, flexibility, impact resistance, heat resistance, and surface characteristics. Always verify that the printer and material combination is suitable for the intended application.
SLS also has a different workflow from filament and resin 3D printing. Powder handling, depowdering, material recycling or refresh requirements, and post-processing should all be considered when evaluating the total workflow and operating requirements.
SLS 3D Printers from 3D Printing Canada
3D Printing Canada supplies Sinterit SLS 3D printing systems for businesses, engineers, designers, manufacturers, research applications, and professional users across Canada. These systems provide an alternative to filament and resin printing for users who need functional polymer parts, complex geometries, and efficient production of multiple components.
If you're considering SLS for the first time, our product specialists can help compare SLS with FFF/FDM and resin 3D printing based on your required materials, part geometry, production volume, surface finish, and application.