ISO 9001 & AS9100 Certified 3D Printing Facility
MJF 3D Printing Service
MJF 3D printing service gives you production-grade nylon parts without tooling. Multi Jet Fusion builds functional components with near-isotropic strength — 97 to 98% uniform in every direction — in a fraction of the time injection molding requires.
At Baetro, we deliver MJF-printed PA12 parts with instant quotes, free DfAM feedback, and no minimum order, whether you need five prototypes or five hundred bridge production units.
PA12 Nylon
Production-grade material
3–7 days
Standard lead time
Free DfAM
On every quote
MOQ 1
Prototype to production
MJF 3D Printing Fundamentals
What Is MJF 3D Printing?
Multi Jet Fusion is a powder-bed fusion process developed by HP. Unlike selective laser sintering, which traces each layer with a CO₂ laser, MJF uses a dual-carriage system that works across the entire build area at once.
Unfused powder acts as natural support. That means complex geometries, internal channels, lattice structures, and interlocking assemblies print without manual support removal. After the build completes, parts are excavated from the powder bed, cleaned, and finished.
Full-Bed Jetting
Dual-carriage system works across entire build area at once
Natural Support
Unfused powder supports complex geometries without manual removal
Internal Channels
Lattice structures and interlocking assemblies print freely
PA12 Nylon
Production-grade material with near-isotropic strength
Powder-Bed Fusion Process
Developed by HP — uses inkjet agents and infrared lamps for fast, uniform fusion across the entire build area.
MJF Materials
MJF 3D Printing Materials
From production-grade nylon to flexible elastomers, Baetro offers a range of MJF materials to match your application requirements.
Most Popular
PA12 Nylon
PA12 is the workhorse material for MJF. It offers an excellent balance of strength, chemical resistance, and cost. Parts come out of the printer in a characteristic charcoal grey color — the result of the black fusing agent embedded throughout the material.
- Best for: production parts, functional prototypes, and end-use components.
- Key properties: resists oils, greases, hydrocarbons, alkalies, and moisture.
- Dyeing: black or custom colors available — black core ensures consistent, deep coloration.
Bio-Based
PA11 Nylon
PA11 is a bio-based nylon derived from castor oil. It offers higher ductility and impact resistance than PA12, with slightly lower stiffness. Engineers choose PA11 when parts need to flex, snap, or absorb shock without breaking.
- Best for: living hinges, snap-fits, and impact-resistant housings.
- Advantage: higher ductility and impact resistance than PA12.
- Applications: flexible and shock-absorbing components.
Elastomeric
TPU (Flexible)
Thermoplastic polyurethane brings elastomeric properties to MJF. TPU parts are flexible, compressible, and return to shape after deformation. Shore hardness typically ranges from 85A to 90A — similar to rubber shoe soles.
- Best for: seals, gaskets, ergonomic grips, and vibration-dampening components.
- Hardness: 85A–90A Shore, similar to rubber shoe soles.
- Applications: flexible and compressible parts that return to shape.
Lightweight & Chemical Resistant
Polypropylene (PP)
PP is lightweight, chemically resistant, and offers excellent fatigue resistance. It is ideal for fluid handling components, chemical-resistant housings, and parts that need to survive repeated flexing.
- Best for: fluid handling, chemical-resistant housings, and fatigue-resistant parts.
- Advantage: one of the lowest-cost MJF materials.
- Applications: high-quantity runs and repeated flexing applications.
High Stiffness
Glass-Filled PA12
Glass-filled PA12 contains 40% glass beads by weight, increasing stiffness and dimensional stability. Tensile modulus jumps to approximately 3,200 MPa — roughly double standard PA12.
- Best for: structural brackets, fixtures, and parts where rigidity matters.
- Key property: 40% glass beads, tensile modulus ~3,200 MPa.
- Consideration: choose when rigidity matters more than impact resistance.
Why Choose MJF
Advantages of MJF 3D Printing
Near-isotropic strength, no support structures, zero tooling cost, and fast turnaround — MJF delivers production-grade nylon parts without the limitations of traditional manufacturing.
Near-Isotropic Strength
MJF parts achieve 97–98% strength uniformity across X, Y, and Z axes. A bracket printed on its side performs nearly identically to one printed upright — FDM cannot match this, with Z-axis strength typically 60–70% of XY strength.
No Support Structures
Unfused powder supports overhangs, internal channels, and lattice structures automatically. You design what you need. We print it. No support removal, no support scars, no wasted material on sacrificial structures.
Zero Tooling Cost
MJF requires no molds, no dies, no fixtures. Upload a CAD file and print. Design changes cost nothing — update the file and reprint. Ideal for iterative prototyping and low-volume production where tooling investment would never pay back.
Fast Turnaround
Because MJF fuses entire layers at once, build speed is nearly independent of part count. A full build bed of one hundred small parts takes roughly the same time as a single large part. Parts ship in 3–7 days.
High Powder Recyclability
MJF reclaims 80–85% of unfused powder for reuse. That keeps material costs lower than SLS and reduces waste. For environmentally conscious manufacturers, this is a meaningful advantage.
Complex Geometries & Bridge Production
Living hinges, snap-fits, interlocking assemblies, internal channels, and organic topology-optimized shapes print without issue. When you need 50 to 1,000 units before injection molding tooling is ready, MJF fills the gap — parts are strong enough for end-use, and design changes remain free.
Capabilities
Our MJF 3D Printing Capabilities
Standard tolerances, build volume limits, and design guidelines for MJF production at Baetro.
Tolerances and Accuracy
Our standard tolerance for MJF parts is ±0.3% or ±0.3 mm, whichever is greater. Layer height is 80 µm — fine enough for crisp edges and smooth surfaces. Minimum feature size is 0.5 mm, which covers most pins, holes, threads, and embossed text.
For reference, our standard tolerance aligns with for general tolerances on additive manufacturing. Material properties are tested per ASTM D638 for tensile strength and ASTM D790 for flexural modulus. If your drawing specifies tighter requirements, contact our engineers — we can review feasibility based on part geometry and orientation.
Build Volume and Size Limits
| Max Build Size | 380 × 284 × 380 mm |
| Min Wall Thickness | 0.5 mm |
| Recommended Wall Thickness | 2.5–12.7 mm |
| Min Feature Size | 0.5 mm |
| Max Part Weight | ~10 kg |
Large, flat parts with thin walls are prone to warping during cooling. Our engineers check every design for warp risk and recommend orientation or geometry changes before printing.
Specification
Tolerance
±0.3% or ±0.3 mm (standard). Layer height: 80 µm. Aligns with ISO 2768.
Specification
Build Volume
380 × 284 × 380 mm max. Min feature size: 0.5 mm. Max weight: ~10 kg.
Specification
Wall Thickness
Min 0.5 mm | Recommended 2.5–12.7 mm. Thicker walls should be hollowed to reduce warping.
Specification
Material Testing
ASTM D638 (tensile) and ASTM D790 (flexural). Warp risk reviewed for every design.
Technology Comparison
MJF vs. SLS vs. FDM — Key Differences
Not sure which technology fits your project? Here is how the three most common industrial 3D printing processes compare.
| Property | MJF | SLS | FDM |
|---|---|---|---|
| Build Speed | Fast (fuses entire layer at once) | Moderate (laser traces each layer) | Slow (extrudes filament path by path) |
| Strength | Near-isotropic (97–98%) | Near-isotropic (90–95%) | Anisotropic (strongest along Z-axis) |
| Surface Finish | Smooth, matte, slightly grainy | Smooth, matte, slightly grainy | Visible layer lines, rougher |
| Layer Height | 80 µm | 100–120 µm | 100–400 µm |
| Support Structures | None (powder supports) | None (powder supports) | Required for overhangs |
| Material Options | PA12, PA11, TPU, PP, glass-filled | PA12, PA11, TPU, more variety | PLA, ABS, PETG, nylon, composites |
| Tolerance | ±0.3% or ±0.3 mm | ±0.3% or ±0.3 mm | ±0.5% or ±0.5 mm |
| Powder Recyclability | 80–85% | 50–70% | N/A (filament-based) |
| Best For | Functional prototypes, bridge production, end-use parts | Functional prototypes, complex geometries | Concept models, form testing, low-cost prototypes |
Our recommendation: Choose MJF when you need functional, load-bearing parts with smooth surfaces and fast turnaround. Choose SLS when you need the broadest material selection or larger build volumes. Choose FDM only for early concept validation where cost matters more than strength or surface quality.
Process Comparison
MJF vs. Injection Molding — When to Choose Each
Understanding the trade-offs between MJF and injection molding helps you choose the right manufacturing process for your project stage and volume.
Comparison Table
| Factor | MJF | Injection Molding |
|---|---|---|
| Tooling Cost | $0 | $3,000–$100,000+ |
| Lead Time (First Parts) | 3–7 days | 4–12 weeks |
| Design Changes | Free (update CAD file) | $500–$5,000+ per revision |
| Cost Per Part (Low Volume) | Lower | Higher (tooling not amortized) |
| Cost Per Part (High Volume) | Higher | Lower (tooling amortized) |
| Surface Finish | Matte, slightly grainy | Smooth, glossy options |
| Material Selection | Limited (PA12, PA11, TPU, PP) | Extensive (100+ thermoplastics) |
| Tolerance | ±0.3% / ±0.3 mm | ±0.1% / tighter |
| Best Volume Range | 1–1,000 units | 1,000–1,000,000+ units |
The break-even point depends on part size and complexity, but for most nylon parts, MJF is more economical up to roughly 500–1,000 units. Beyond that, injection molding's per-part cost advantage outweighs the tooling investment.
Our Recommendation
- Use MJF for prototypes, bridge production, and low-volume runs where design changes are likely.
- Transition to injection molding once volumes justify tooling and the design is locked.
- Break-even point: typically 500–1,000 units for most nylon parts.
- Engineering support: upload your CAD files to get a process recommendation based on your specific part, volume, and timeline.
Why Choose Baetro
Why Choose Baetro for MJF Printing?
Engineering-first partnership, transparent pricing, full post-processing, and one partner for every stage of your product lifecycle.
Engineering-First Partnership
We do not just slice your file and print. Our engineers review every design for DfAM optimization before production. We have consolidated three-part assemblies into single prints, reduced wall thicknesses to cut material use, and suggested lattice infills that maintained stiffness while dropping weight by half. That is the difference between a print shop and a manufacturing partner.
Transparent Pricing and Lead Times
Upload your CAD file and receive an instant quote with live pricing in under 60 seconds. No hidden setup fees. No minimum order quantity. No tooling cost.
- Parts ship in 3–7 days standard
- Order 1 piece or 1,000 pieces — same process, same quality
- Real-time order tracking from print to delivery
Full Post-Processing
Parts arrive finished and ready to use. Choose from bead blasting, vapor smoothing, dyeing, painting, and light assembly. We handle post-processing in-house, so you do not need a secondary supplier.
One Partner, Many Processes
MJF is just one tool in our shop. When your prototype validates, we can transition the same part to SLS for a different material, CNC machining for metal, or injection molding for high-volume production. One CAD file. One partner. Every stage of your product lifecycle.
Applications
MJF 3D Printing Applications
MJF 3D printing serves industries ranging from automotive to aerospace, delivering functional nylon parts with near-isotropic strength and fast turnaround.
Industry
Automotive
MJF PA12 handles the heat, vibration, and chemical exposure typical of automotive environments. Common applications include interior brackets, fluid reservoirs, ducting, wiring harness clips, and custom jigs for assembly lines. Glass-filled PA12 works well for structural brackets where stiffness is critical.
Industry
Medical and Healthcare
PA12 is USP Class VI certified and FDA-approved for skin-contact devices. We print surgical guides, prosthetic components, orthotics, medical device housings, and sterilization trays. Vapor smoothing and dyeing are available for parts that require repeated autoclaving or aesthetic consistency.
Industry
Consumer Electronics
MJF excels at producing durable housings, cases, eyewear frames, game controller grips, and wearable device components. The smooth surface finish requires minimal post-processing for consumer-facing products. Dyeing adds brand colors without painting.
Industry
Industrial and Robotics
Manufacturing engineers use MJF for robotic grippers, end-effectors, fixtures, manufacturing aids, and custom tooling. The ability to print complex internal channels for vacuum or pneumatic systems makes MJF ideal for automation components.
Industry
Aerospace
While not suited for primary flight structures, MJF PA12 serves aerospace well for ground support equipment, interior cabin components, lightweight ducting, and non-critical brackets. Full material traceability documentation supports aerospace quality requirements.
Design Guidelines
Design Guidelines for MJF
Follow these design guidelines to optimize your MJF parts for strength, accuracy, and cost. Our engineers provide free DfAM feedback on every quote.
Wall Thickness
Minimum wall thickness is 0.5 mm, but we recommend 2.5–12.7 mm for optimal strength and dimensional accuracy. Walls thinner than 2.5 mm may flex or warp during cooling. Walls thicker than 12.7 mm should be hollowed to reduce cost, weight, and residual stress.
Feature Size
Pins, holes, and embossed text should be at least 0.5 mm in size. Smaller features may lose definition or fail to fuse completely. For threaded holes, we recommend designing for self-tapping screws or printing slightly undersized and tapping afterward.
Hollowing and Lattice Structures
Thick solid sections increase print time, material cost, and warping risk. Our engineers recommend hollowing parts with 3–5 mm wall thickness and adding internal lattice structures for stiffness. This can reduce part weight by 40–60% and cut cost by 20–30% without sacrificing strength.
Design for Additive Manufacturing
DfAM Tips from Our Engineers
When you upload a CAD file for an MJF quote, our engineers review it for manufacturability and provide free suggestions to improve part quality and reduce cost.
- Increase corner radii: Reducing stress concentration, improves powder flow during printing, and enhances part strength. Sharp internal corners are more prone to cracking under load.
- Consolidate multiple parts: Consolidating multiple parts into a single print assembly reduces assembly time, eliminates fasteners, and improves part strength. MJF can print moving assemblies and interlocking components in one build.
- Add drainage holes: Adding drainage holes to hollow sections allows unfused powder to escape during cleaning. This reduces post-processing time and ensures clean internal channels without trapped powder.
- Optimize orientation: Optimizing orientation for best surface finish on critical faces reduces post-processing and improves dimensional accuracy. Our engineers help you find the optimal print orientation for your part.
- Free DfAM feedback: These suggestions are provided at no cost with every MJF quote. Our engineering team applies decades of additive manufacturing experience to help you reduce cost, improve manufacturability, and accelerate production.
- Cost reduction potential: DfAM optimizations often reduce part cost by 20% or more. By applying these design principles early, you can achieve significant savings without compromising part quality or performance.
FAQ
Frequently Asked Questions
Answers to common questions about MJF 3D printing materials, tolerances, pricing, lead times, and post-processing.
What is the difference between MJF and SLS?
MJF uses inkjet arrays to deposit fusing and detailing agents onto powder layers, which are then fused by infrared lamps. SLS uses a CO₂ laser to sinter powder point by point. MJF fuses entire layers at once, making it significantly faster with higher powder reuse rates — 80–85% for MJF versus 50–70% for SLS. MJF also achieves slightly better isotropy at 97–98% versus 90–95% for SLS.
What materials can MJF print?
MJF prints PA12 (most common), PA11, TPU, polypropylene, and glass-filled PA12. PA12 is the default choice for its balance of strength, chemical resistance, and cost. Our engineers can recommend the best material for your application based on mechanical requirements, chemical exposure, and cosmetic needs.
What tolerances can MJF hold?
Our standard tolerance is ±0.3% or ±0.3 mm, whichever is greater, with an 80 µm layer height. Minimum feature size is 0.5 mm. Tighter tolerances may be achievable on request depending on part geometry and orientation. Every part is dimensionally inspected against your CAD file.
How much does MJF 3D printing cost?
MJF has zero tooling cost. Per-part pricing depends on part volume, wall thickness, material, finish, and quantity. The fastest way to get an accurate price is to you will see live pricing in under 60 seconds. For most applications, MJF is the most cost-effective choice for 1 to 1,000 units.
Can MJF parts be dyed or painted?
Yes. We offer dyeing in black and custom colors, as well as painting and vapor smoothing. Dyeing works particularly well with MJF PA12 because the black fusing agent throughout the material creates uniform, deep coloration. Vapor smoothing adds a glossy, sealed surface that improves chemical resistance and cleanability.
What is the fastest lead time for MJF prototypes?
Parts ship in 3–7 days with our standard lead time. There is no minimum order quantity — you can order a single prototype to validate fit and function before scaling up. Expedited options are available for urgent projects.
Are MJF parts strong enough for end-use?
Yes. MJF PA12 achieves 97–98% isotropic mechanical properties with tensile strength of 48–52 MPa — comparable to injection-molded PA12. Parts are used in automotive interiors, medical devices, robotic end-effectors, and consumer products in full production environments.
What file formats do you accept for MJF?
We accept STEP (.stp), STL (.stl), and IGES (.igs) files. STL is preferred for 3D printing quotes because it is the native format for most additive manufacturing workflows. For the most accurate quote, export your STL at high resolution with watertight geometry.
Quote-ready manufacturing
Get Functional MJF Parts — Instantly
MJF 3D printing bridges the gap between prototyping and production. You get functional, near-isotropic nylon parts with zero tooling cost, fast turnaround, and the freedom to iterate. At Baetro, we pair that technology with engineering expertise — free DfAM review, full post-processing, and transparent pricing on every quote.
Whether you need five prototypes or five hundred bridge production units, upload your CAD file today for an instant MJF quote. See your exact price and lead time in under 60 seconds — no sales calls, no hidden fees, no minimums.
Parts ship in 3–7 days. No minimum order quantity. ISO 9001 & AS9100 certified.
Not ready to upload a file? Contact our engineers to discuss your project, review material options, or get guidance on tolerance selection.