SLS 3D Printing Service
Powder-based printing for complex geometries
About SLS 3D printing
Selective Laser Sintering (SLS) enables complex geometries without support structures using powder-based polymer materials. Perfect for engineering and consumer goods, SLS combines excellent mechanical properties with strong surface finish while keeping costs low compared to traditional methods. Because SLS allows stacking tens, hundreds, or thousands of parts in a single build, RapAdd MFG's automated SLS production lines can deliver exceptional quantities without the limitations of traditional manufacturing.
Sample Applications
Automotive Ducting
With strong polymers capable of withstanding up to 140°C before softening, SLS-printed items are a great option for many automotive use cases.
Component enclosure
Thanks to the high surface quality of SLS printed items, especially after our post-processing steps, it is possible to directly produce large quantities of end-use items ready to ship to consumers.
Beverage Nozzle
RapAdd MFG provides PA12 grades that are safe for contact with wet foods. Approved by the FDA and European counterparts, these can be used to produce components directly related to the food industry.
Automated Production Workflow
Fully Automated Production Pipeline
Powder preparation
Laser sintering
Cooling
Powder removal
Finishing
Advantages & Limitations
Advantages
- No support structures needed
- Complex geometries
- Strong parts
Limitations
- Rough surface finish
- Limited materials
- Powder handling
Available Materials
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Sample Prints
Design Guidelines
SLS (Selective Laser Sintering)
Powder-based laser sintering technology
Min Wall Thickness (Unsupported)
1.2 mm
Min Wall Thickness (Supported)
0.8 mm
Min Feature Size
0.5 mm
Min Hole Size
1.0 mm
Tolerances
±0.15 mm
Min Letter Size
1.0 mm height, 0.3 mm depth
Min Pin Size
2.0 mm diameter
Max Overhang
No support required
Layer Height
0.12 mm
Technology Comparison
Compare our additive manufacturing technologies across key performance metrics to choose the best solution for your project requirements.
Technology Performance Matrix
| Criteria | FDM | SLA | DLP | SLS | Polyjet | DMLS/SLM |
|---|---|---|---|---|---|---|
| Cost per Part | $ | $$ | $$$ | $$ | $$$$ | $$$$$ |
| Surface Quality | Good | Excellent | Excellent | Very Good | Excellent | Excellent |
| Accuracy | ±0.3mm | ±0.15mm | ±0.1mm | ±0.2mm | ±0.1mm | ±0.15mm |
| Material Variety | Very High | Medium | High | Medium | High | Limited |
| Build Volume | Large | Very Large | Small | Medium | Medium | Small |
| Support Required | Yes | Yes | Yes | No | Yes | Yes |
| Post-Processing | Minimal | Moderate | Moderate | Moderate | Moderate | Extensive |
| Multi-Material | Limited | No | No | No | Yes | No |
Ready to Start Your Project?
Upload your files now for instant pricing across all our technologies, or speak with our engineering team for a custom consultation.
Questions about which technology is right for your project?Contact our technical team