Similarities
- Both are powder bed fusion technologies – no supports needed.
- The core material is PA12 nylon, plus PA11 and TPU.
- Suitable for functional prototypes and series; accuracy ±0.3 mm or ±0.3 %.
Differences
| MJF | SLS | |
|---|---|---|
| Fusion | Fusing agent + IR heat | Laser |
| Build volume | 380 × 380 × 284 mm | 335 × 335 × 600 mm |
| Part density | Nearly 100 %, nearly isotropic | Slightly more porous |
| Surface | Matte, slightly rough, gray | Smooth, slightly porous |
| Materials | PA12, PA11, PA12 GB, PP, TPU, CB PA12 | PA12, PA11, PA11 ESD, Alumide, PA GF, TPU |
When to choose MJF
- Series – tens or hundreds of parts.
- Maximum strength and isotropy are required.
- The part fits within 380 × 380 × 284 mm.
When to choose SLS
- A tall or long part (up to 600 mm).
- You need ESD, Alumide or PA GF.
Compare with your own model
Upload your model and click “Compare options” in the configurator – you will see the price and lead time of the same part in both technologies.