Selective Laser Sintering (SLS) 3D Printing Services
Strong, functional nylon parts—fast. Our SLS 3D printing service delivers high-performance prototypes and end-use parts with no support marks, excellent mechanical strength, and fast lead times.
- ±0.3 mm accuracy, ideal for tight-tolerance parts
- No support structures, clean finish on all surfaces
- Ideal for complex, interlocking, or enclosed geometries
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High-Performance Nylon Parts with SLS 3D Printing
Selective Laser Sintering (SLS) is a powder-based 3D printing process that uses a high-powered laser to fuse nylon particles layer by layer—no supports needed. This makes it ideal for strong, complex parts with functional geometries that traditional methods can’t achieve.
SLS delivers excellent mechanical strength, dimensional stability, and design freedom, making it a go-to choice for prototypes, end-use parts, and small-batch production.
At Koonze Model, we offer fast turnaround, industrial-grade accuracy, and multiple nylon material options to meet your project’s needs.
Why Choose Our SLS Services
Industrial-Grade Equipment Only
We use top-tier SLS printers to ensure consistent quality, accuracy, and part strength—no desktop shortcuts.
Fast Turnarounds, Even for Complex Builds
Get functional nylon parts in as fast as 3 days, with reliable lead times even on intricate assemblies.
End-to-End Support
From material selection to DfM feedback and finishing, our engineers work with you to get every detail right.
Small Batches, Big Quality
Whether it’s one part or one hundred, we treat every SLS build with the same care, precision, and QC standards.
Get an SLS Quote Now
Upload your file to receive a fast, accurate quote for high-performance nylon parts.
SLS 3D Printing Materials
We offer durable plastics designed to meet varying demands for strength, flexibility, and heat resistance. Our materials are optimized for functional parts, from load-bearing components to flexible prototypes.
Rigid Plastics
- Alumide® / Nylon 12 (PA 12) filled with aluminium
- Nylon 11 (PA 11)
- Nylon 12 (PA 12) glass-filled
- Nylon 12 / PA 12 (SLS, MJF)
- Nylon 12 flame retardant / PA 2241 FR
- PA 11 Food Grade
- PA 12 Food Grade
- Polypropylene (PP)
Flexible Plastics
- Flex TPU
- Rubber-like TPU (Industrial grade)
Finishing Options for SLS 3D Printing
As-printed
Parts are cleaned using sandblasting and manual powder removal. The standard finish is matte with a texture similar to sugar cubes.
Bead blasting
Parts are depowdered using bead blasting, resulting in a slightly textured feel and a satin matte finish.
Vapour smoothing
Printed parts are immersed in vaporized chemical solvents to achieve a controlled surface melting of the material.
Media tumbling
This batch process uses vibrating media to tumble parts, removing sharp edges and burrs. Tumbling also smooths exterior surfaces by eliminating machine marks for a more consistent finish.
Spray painting
Delivers a continuous, protective color coating applied through spraying.
Dyeing
Applying color to parts through dyeing.
Vapour smoothing + dyeing
Parts are initially treated in vaporized chemical solvents to create a controlled melt that smooths sharp edges and produces a glossy finish. Afterward, they are dyed with the selected color.
Vapour smoothing + spray painting
Parts are first treated with vaporized chemical solvents to soften sharp edges through a controlled melt. They are then spray painted to apply a continuous, protective color finish.
Custom
If you can submit your inquiry now and select your desired finish, our team will review it promptly and get in touch with you.
SLS Materials for Special Applications
Food-grade PA 11 and PA 12 are widely used in SLS 3D printing for their excellent biocompatibility and compliance with food safety standards. These materials are specially engineered to meet the strict demands of food-related applications. Koonze Model provides two SLS-compatible, food-compliant options:
- PA 12 in white
- PA 11 in blue
PA 2241 FR is a flame-retardant polyamide powder designed for high-performance applications. It offers excellent mechanical strength along with reliable flame resistance, making it well-suited for use in the aeronautics and aerospace industries.
Ready to bring your parts to life with SLS 3D printing technology?
Get an free quote and start your project today.
SLS Manufacturing Specifications & Capabilities
| SLA | SLS | FDM | DMLS | |
|---|---|---|---|---|
| Lead time | 7 days | 3 days | 8 days | 5 days |
| Build volume | • 145 × 145 × 185 mm (Standard) • up to 736 x 635 x 533 mm (Industrial) | up to 340 x 340 x 605 mm, but usually, we recommend the maximum size of 320 x 320 x 580 mm | • 350 x 350 x 350 mm (Standard) • 900 x 600 x 900 mm (Industrial) | 400 x 400 x 400 mm |
| Layer thickness | min 0.02 | ~0.1 mm and for water-tight parts 1.5 mm, when wall thickness is higher | ~0.05-0.3 mm | 0.02 – 0.08 mm depending on the material |
| Minimum feature size | 0.2 mm | 0.5 mm | up to 0.2 mm | 0.75 mm for cosmetic features, 1.5 mm for structural features |
| Tolerance | • ±0.5% (±0.2 mm) (Standard) • ±0.5% (±0.15 mm) (Industrial) | ±0.3% (± 0.3 mm) | ±0.5% (±0.5 mm) (Standard & Industrial) | ±0.2% (±0.1 – 0.2 mm) |
| Description | A process that creates parts with exceptional precision and fine detail. | A widely used and cost-effective method for industrial 3D printing. | Renowned for its broad material options, high accuracy, and capability to produce large parts. | A metal 3D printing process that selectively fuses fine metal powders like aluminum or stainless steel. |
| Support structures | Yes, for overhanging features | No | Yes, for overhanging features | Yes, for overhanging features |
| SLA | SLS | FDM | DMLS | |
|---|---|---|---|---|
| Lead time | 7 days | 3 days | 8 days | 5 days |
| Build volume |
• 145 × 145 × 185 mm (Standard)
• up to 736 x 635 x 533 mm (Industrial) |
up to 340 x 340 x 605 mm, but usually, we recommend the maximum size of 320 x 320 x 580 mm |
• 350 x 350 x 350 mm (Standard)
• 900 x 600 x 900 mm (Industrial) |
400 x 400 x 400 mm |
| Layer thickness | min 0.02 | ~0.1 mm and for water-tight parts 1.5 mm, when wall thickness is higher | ~0.05-0.3 mm | 0.02 – 0.08 mm depending on the material |
| Minimum feature size | 0.2 mm | 0.5 mm | up to 0.2 mm | 0.75 mm for cosmetic features, 1.5 mm for structural features |
| Tolerance |
• ±0.5% (±0.2 mm) (Standard)
• ±0.5% (±0.15 mm) (Industrial) |
±0.3% (± 0.3 mm) | ±0.5% (±0.5 mm) (Standard & Industrial) | ±0.2% (±0.1 – 0.2 mm) |
| Description | A process that creates parts with exceptional precision and fine detail. | A widely used and cost-effective method for industrial 3D printing. | Renowned for its broad material options, high accuracy, and capability to produce large parts. | A metal 3D printing process that selectively fuses fine metal powders like aluminum or stainless steel. |
| Support structures | Yes, for overhanging features | No | Yes, for overhanging features | Yes, for overhanging features |
Pros & Cons of SLS 3D Printing
Selective Laser Sintering (SLS) 3D printing offers strong, durable parts with complex geometries and no need for support structures. It works well for functional prototypes and small production runs.
However, surface finish can be rough, and post-processing is often required. Equipment and material costs are relatively high compared to other methods.
Advantages
Considerations
- Supports freeform designs without requiring support structures
- Uses versatile, durable, flexible, and chemical-resistant nylon materials
- Easily scalable for series production
- Quick turnaround: Koonze Model delivers parts in as little as 3 days
- Cost-effective, particularly for small production runs
- Material and color options are limited
- Surface texture tends to be rough, though media tumbling can improve it
- Larger parts may experience warping
- Post-processing choices are somewhat restricted
Koonze Model Also Offers These Services
In addition to SLS, Koonze Model offers a range of advanced 3D printing technologies including SLA, FDM, SLM, DLP, and DMLS. These options provide greater flexibility in materials, finishes, and applications to meet diverse prototyping and production needs.
- SLA
- FDM
- SLM
- DLP
- DMLS
Need Help Choosing a 3D Printing Method?
Talk to our experts—we’ll recommend the right process based on your part’s needs.
Frequently Asked Questions About SLS 3D Printing
SLS 3D Printing Resources
