Our unique network of plastic 3D printing includes some of the most advanced and versatile prototyping service providers. MJF machines are developed and produced by HP. Thanks to our direct collaboration with our service providers, we are able to provide you with the best price for MJF parts.
✓ Excellent mechanical strength
✓ Complex shapes and features
✓ Great for functional parts
✓ Feasible low volume production
✓ Competitive pricing
MJF capability overview
| MJF | |
|---|---|
| Maximum build size (L x W x H) | 380 x 284 x 380 mm |
| Standard lead time | 6 – 8 days (24hrs service possible upon request) |
| Dimensional accuracy |
± 0.5% with a lower limit on ± 0.3 mm
± 0.2% - 0.3% with a lower limit on ± 0.15 mm
|
| Minimal wall thickness |
0.7 mm (PA)
1.0 mm (TPU)
|
| Layer height | 80 μm |
When to use MJF
- Excellent mechanical strength for functional prototypes
- Good for assemblies, jigs, living hinges, snap fits and pin hinges.
- Additional polishing can be used to improve surface finish
- Can be used to replace metal components in some cases
MJF is HP’s proprietary 3D printing process, it’s a mix of SLS and binder jetting technology. The material is also Nylon like in SLS, but rubber like material like TPU is also available. The overall specification of MJF and SLS is nearly identical, only that part produced by MJF has a slightly higher overall strength (as of today). MJF parts have a light grey appearance, and can be dyed to achieve a uniform black finish.
Available materials for MJF
| Types | General considerations |
|---|---|
| PA11 | Has better flexibility and higher impact resistance than PA12, more expensive |
| PA12 | High strength and stiffness, has better temperature range than PA11 Light grey by default, can be dyed in any colour |
| PA12 Glass beads | Reinforced with glass beads, higher stiffness and thermal stability |
| TPU | Grey, rubber like |
Post-processing service for MJF
| Service |
|---|
| Smooth polishing |
| Dye / paint to RAL colour |
| Sand / bead blasting |
| Additional machining and inserts |
General features of 3D printing technologies
| SLA | MJF | FDM | SLS | MJP/PolyJet | DMLS/SLM | LSF | WAAM | |
|---|---|---|---|---|---|---|---|---|
| Accuracy & detail | ★★★★★ | ★★★★ | ★★★★ | ★★★★ | ★★★★★ | ★★★★★ | ★★★★ | ★★★ |
| Surface finish | ★★★★ | ★★★★ | ★★ | ★★★★ | ★★★★★ | ★★★★ | ★★★★ | ★★ |
| Complex geometry | ★★★★ | ★★★★★ | ★★ | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★ | ★★ |
| Mechanical strength | ★★ | ★★★★★ | ★★★★ | ★★★★★ | ★★★★ | ★★★★★★★ | ★★★★★★★ | ★★★★★★★ |
| Relative cost | ■■ | ■■■ | ■ | ■■■ | ■■■■ | ■■■■■■ | ■■■■■■■■ | ■■■■■■ |
*The table assume typical material used in respective technology at comparable sizes (except for LSF and WAAM which are only suitable for very large parts).
Post-processing may be used to improve surface finish significantly.