Multi Jet Fusion delivers isotropic, high-strength nylon parts at production speed. Superior surface finish, dimensional accuracy and mechanical consistency versus SLS — the benchmark powder bed process for functional prototypes and end-use production parts.
MJF uses HP's thermal inkjet array to apply fusing and detailing agents across a nylon powder bed, then fuses the entire layer simultaneously with infrared energy. The result: isotropic mechanical properties, smooth surface finish and tight tolerances — at throughput rates far exceeding SLS. It is the preferred process when production volume, dimensional consistency and functional part performance are required.
Isotropic Mechanical Properties
Uniform strength in X, Y and Z axes — critical for functional end-use parts and assemblies under multi-directional load.
Superior Surface Finish vs SLS
Finer detail resolution and smoother as-built surfaces. Less post-processing required to achieve specification finish.
No Support Structures Required
Unfused powder supports the build. Complex internal channels, undercuts and interlocking assemblies print without support waste.
High-Volume Production Ready
Batch production of hundreds of parts per run. Consistent part-to-part dimensional repeatability across the full build volume.
| Parameter | Specification |
|---|---|
| Max Build Volume | 380 x 284 x 380 mm |
| Layer Thickness | 0.08 mm (80 µm) |
| Dimensional Accuracy | ±0.3% (min ±0.3 mm) |
| Minimum Wall Thickness | 0.5 mm (recommended 0.8 mm) |
| Surface Finish (Ra) | 5–10 µm as-built (improvable with vapour smoothing) |
| Standard Lead Time | 3 – 5 business days |
| Accepted File Formats | STL, STEP, OBJ, 3MF, IGES |
6 engineering materials covering structural nylon, flexible TPU and glass-filled grades for demanding mechanical applications.
The workhorse MJF material. Excellent chemical resistance, good fatigue life and superior isotropy. Ideal for functional prototypes and end-use parts across all industries.
Rigid3–5 daysSame mechanical profile as PA12 Grey with uniform black pigmentation through-body. Preferred for consumer electronics and UV-exposed components.
Rigid3–5 daysHigher elongation at break versus PA12. Superior impact resistance. Best for hinge mechanisms, snap-fits, wearable devices and ducting components.
Semi-flex3–5 daysGlass microspheres for increased stiffness, dimensional stability and heat resistance. For structural housings and jigs requiring reduced creep.
RigidGlass-Filled3–5 daysThermoplastic polyurethane for highly flexible, rubber-like parts. Excellent abrasion resistance and tear strength for gaskets, grips and connectors.
Flexible5–7 daysStandard PA12 dyed to RAL or Pantone specification for consumer products and colour-coded assemblies.
RigidColour5–7 daysFull traceability from CAD upload to QA sign-off and dispatch.
Submit STL/STEP. Receive detailed quote with DfAM feedback.
Nesting optimised for packing density. Orientation selected for best mechanical performance.
HP thermal agents applied layer by layer. Full-layer infrared fusion at 80µm resolution.
Cake breakout, bead blast, shot peening. Vapour smoothing, dyeing or painting as specified.
Dimensional inspection, job card sign-off. Packed and dispatched with full tracking.
We work with engineers, designers and procurement teams across Australia every day.
"I would highly recommend Pratik at 3D Printing — with his analytical mind he helped re-engineer a component for an electric scooter. The final design was cost effective, strong and an exact fit."
"Can't speak more highly of this Company. They overcame many difficulties through their tenacity and patience. I highly recommend this company for any 3D prototyping, design or development of your idea."
"Great service, quick turnaround — I needed parts scanned, a couple of design changes and printed. All done quickly, efficiently and A+ quality. Definitely recommend the team at 3D Prototyping."
"It was a pleasure dealing with 3D Prototyping. They are professional and their customer service is excellent. I would recommend these guys any time over any other players in this industry."
"This Company is good, efficient and easy to deal with. Their advice and knowledge around materials really helped us get what we needed. Great service provided. We will certainly use this company again."
Upload your CAD file and tell us what you need. We respond with a detailed quote — usually same business day.
Multi Jet Fusion (MJF) is an HP powder bed fusion process. A carriage with thermal inkjet arrays passes over the nylon powder bed, depositing fusing agent where parts are required and detailing agent at boundaries. An infrared energy source then fuses the entire layer simultaneously — giving MJF its throughput advantage over SLS and its superior surface quality.
MJF produces better surface finish, tighter tolerances and isotropic properties versus SLS, and significantly higher throughput. FDM offers the widest material range at lowest cost but produces visible layer lines. Choose MJF when you need functional nylon parts with consistent mechanical performance at any volume.
Standard: bead blast. Options include shot peening, vapour smoothing (near-injection-moulded Ra), dyeing, painting (RAL/Pantone matched), and heat-set insert installation (M2–M10). Specify finishing requirements in the quote form.
STL is the standard format. We also accept STEP, OBJ, 3MF and IGES. Ensure your model is watertight with wall thickness above 0.5 mm. Our engineers review every file before quoting and flag any issues.
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