Technical Comparison
SLS vs MJF: Which Technology is Right?
A detailed engineering breakdown of Selective Laser Sintering (SLS) and Multi Jet Fusion (MJF) for industrial production.
Quick Summary
While both are powder-bed fusion technologies ideal for functional parts without support structures, they differ in heating mechanism and material properties.
The Verdict
Choose MJF for isotropic mechanical properties, finer details, and slightly better surface finish. Choose SLS for a wider range of materials, larger build volumes, and white parts that are easier to dye custom colors.
Technical Specifications
| Feature | SLS | MJF |
|---|---|---|
| Accuracy | ±0.3% (min ±0.3mm) | ±0.2% (min ±0.2mm) |
| Surface Roughness | Ra 6-10 µm (Rougher) | Ra 4-7 µm (Smoother) |
| Wall Thickness (Min) | 0.8 mm | 0.5 mm |
| Mechanical Properties | Anisotropic (Z-axis weaker) | Isotropic (Uniform strength) |
| Color | White (Dyeable) | Grey (Dyed Black) |
Decision Guide
SLS
Choose SLS if...
- You need large parts (up to 600mm).
- You need white parts or specific custom colors.
- You require specialized materials (TPU, Alumide).
MJF
Choose MJF if...
- You need high strength and isotropic properties.
- You require fine details and thin walls.
- You are producing a batch of small functional parts.