Step 1 of 4
Powder Bed Preparation
A thin, uniform layer of powdered thermoplastic material is spread across the heated build platform using precision spreading mechanisms.
- Layer Height
- 80 microns
- Material
- Nylon PA12
Thermoplastic Technology
Rapid Production
High Throughput
Multi-Jet Fusion(MJF)3D Printing for High-Performance Prototypes & End-Use Parts
Precision engineering with fine detail resolution and excellent surface quality. Production-grade materials like PA12 & glass-filled nylons for strength and durability. Scalable for low-to-mid-volume manufacturing with cost-efficient batch production. MJF is widely used for functional prototypes and end-use parts where repeatability and throughput matter.
Build Volume
380 × 284 × 380 mm
Tolerance
±0.3%
Layer Height
80 microns
Machinery
HP Jet Fusion 5200
Technology Overview
High-Speed Production 3D Printing
MJF combines speed with quality through parallel processing technology. Ideal for rapid prototyping and scalable production with consistent mechanical properties and excellent surface finish.
Why manufacture with MJF
Advanced manufacturing capabilities enable complex geometries, functional prototypes, and end-use production parts that would be impossible or cost-prohibitive with traditional manufacturing methods. From functional prototypes to end-use production parts, this technology delivers exceptional performance across demanding industries.
Production Applications
1 to 1000+ Parts Built in Hours
Engineered for high-volume production with consistent mechanical properties across thousands of parts, MJF technology delivers production-grade components with excellent surface finish and dimensional accuracy. The thermal fusion process enables rapid part consolidation with up to 80% powder reusability, making it cost-effective for batch production. Industries rely on MJF for functional prototypes, end-use parts, and custom manufacturing where speed and consistency are critical.
Production applications
End Use Parts for High-Performance Applications
Production workflows benefit from MJF's unique ability to nest hundreds of parts efficiently within each build, maximizing throughput while maintaining consistent quality. The thermal inkjet process applies fusing and detailing agents with precision, creating smooth surfaces and sharp edges without traditional support structures. Real-time monitoring and closed-loop control systems ensure every part meets stringent quality standards for batch production and regulatory compliance.
Key advantages
Complex geometries: Intricate internal channels, overhangs, and assemblies impossible with traditional manufacturing.
Functional prototypes: Test mechanical properties and fit before investing in production tooling.
Custom tooling: Jigs, fixtures, and manufacturing aids tailored to specific production requirements.
End-use parts: Production components for aerospace, medical, automotive, and industrial applications.
Manufacturing Process
The Multi-Jet Fusion (MJF) manufacturing process
Multi-Jet Fusion technology delivers superior speed and quality through its unique parallel processing approach, making it ideal for both rapid prototyping and scalable production. Fusing and detailing agents are jetted across the powder bed, then infrared energy bonds the material for uniform properties. Parts are depowdered and bead blasted or dyed to achieve the final surface finish.
Step 2 of 4
Agent Deposition
Inkjet arrays simultaneously apply fusing agents (for bonding) and detailing agents (for surface quality) to specific areas of the powder bed with high precision.
- Resolution
- 1200 x 1200 DPI
- Agents
- Fusing & Detailing
Step 3 of 4
Infrared Fusion
Infrared energy heats the entire powder bed, causing areas treated with fusing agent to melt and bond while untreated powder remains loose.
- Energy Source
- Infrared
- Temperature
- Material Specific
Step 4 of 4
Layer Completion
The process repeats layer by layer until the complete part is formed, with excess powder acting as natural support during printing.
- Build Speed
- High Throughput
- Support
- Powder Bed
- Build Volume
- Tolerance
- Layer Height
- Machines
No support structures are required, allowing parts to stack vertically for extremely high packing density up to 380 × 284 × 380 mm.
Thermal control and shrink compensation maintain repeatable dimensional accuracy to ±0.3%.
Thin, uniform layers for smooth surfaces at production speed using 80 microns.
Forge Labs manufactures MJF parts using HP 5200 / HP 4200.
Material Library
High Throughput MJF Materials
High-throughput MJF materials combine speed with quality, delivering functional parts with excellent mechanical properties. Our PA12 and PA11 materials offer superior surface finish and dimensional accuracy for both prototyping and production runs.
Primary Material
HP MJF PA12
High-Performance Multi Jet Fusion Nylon
HP 3D High Reusability PA 12 is engineered specifically for HP Multi Jet Fusion technology, delivering exceptional mechanical properties, fine detail resolution, and excellent surface quality. This balanced material offers high powder reusability rates, making it cost-effective for both prototyping and production applications.
Tensile Strength
48 MPa
Flexural Modulus
1700 MPa
Temp Resistance
162 °C
Compliance
ISO 10993-1 (Biocompatibility)/RoHS Directive 2011/65/EU
Applications
Functional Prototypes/Production Parts/Complex Assemblies/Tooling & Fixtures
Reinforced
HP MJF PA12 Glass Filled
High-Strength Glass Fiber Reinforced Nylon
HP 3D High Reusability PA 12 Glass Filled combines the precision and efficiency of Multi Jet Fusion technology with the enhanced mechanical properties of glass fiber reinforcement. This advanced material delivers significantly increased stiffness, strength, and dimensional stability compared to standard PA12, making it ideal for structural applications and high-load components.
Tensile Strength
55 MPa
Flexural Modulus
3000 MPa
Temp Resistance
180 °C
Compliance
ISO 10993-1 (Biocompatibility)/UL 94 HB
Applications
Structural Components/Automotive Parts/Aerospace Brackets/Industrial Tooling
Post-Processing
Material Surface Finishes
MJF parts have a smooth, matte surface with a slightly grainy texture due to the powder-based printing process. Unlike FDM, MJF does not produce visible layer lines, resulting in a more uniform and professional appearance straight from the printer. At Forge Labs, bead blasting is performed as a standard post-processing step to remove excess powder and refine the surface texture.
As-Printed
Standard Finish
Natural Grey
MJF parts are delivered with a standard bead-blasted finish in natural grey. This process removes excess powder and slightly smooths the surface while maintaining the material's natural matte texture.
Finish attributes
Surface TextureUniform, matte grey finish with subtly grainy texture
AppearanceMatte Grey
DetailsWell represented
Natural Finish
Black Dyed
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Enhanced
Deep Color Dye
Dyed Black
Specialized dye bath creates deep, uniform black color that chemically bonds with the nylon material. Unlike painted finishes, the dye fully penetrates the surface and won't chip or wear off over time.
Finish attributes
Surface TextureBlack dye fully saturates the material for professional finish
AppearanceMatte Black
DetailsWell represented
Natural Finish
Vapor Smoothed
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Premium
Vapor Smoothing
Enhanced Finish
Advanced chemical smoothing technique that enhances surface quality by slightly melting and redistributing the surface material, eliminating grainy texture and sealing porous areas.
Finish attributes
Surface TextureRemoves the powdery texture of MJF parts
AppearanceSmoother, semi-gloss finish
DetailsMay soften
Premium
Performance Paint
Custom Finish
Automotive-grade coating that enhances aesthetics and durability. Hand-finished for smooth surfaces with professional-grade equipment. Custom color matching available for precise branding needs.
Finish attributes
Surface TextureMatte to Semi-Gloss
AppearanceCustom color matching for precise branding
DetailsClear & refined
Value-Added Services
MJF Production Services
MJF is strongest in repeatable batch output. These services focus on throughput, visual consistency, and downstream integration.
Batch planning and nesting
Part orientation and packing strategy to stabilize cost-per-part at volume.
Post-process consistency
Bead blast and dye standards for repeatable color and texture across lots.
Sealing and surface refinement
Optional smoothing and sealing paths for improved surface feel and cleanability.
Design Guidelines
MJF Design Guidelines
Our design guidelines for MJF include important information to improve part quality, minimize costs, and reduce overall manufacturing time. This section is a quick primer before full DFM review.
Maximum Build Volume
380 x 284 x 380 mm (15 x 11.2 x 15 inches)
If your parts require specific tolerances, please include an engineering drawing along with the part.
Tolerances
Nylon PA 12: ±0.3% (min ±0.5 mm)
If your parts require specific tolerances, please include an engineering drawing along with the part.
Minimum Wall Thickness
1.0 mm (0.039")
Supported walls are connected to two or more sides and are thick enough to support the model.
Layer Height
100 Microns
The layer height is the overall Z resolution of the part; we avoid stepping artifacts on important features of your models by orienting the part(s) along the Z plane or at a 20 degree angle on all sides.
Technology Advantages
Why teams choose MJF
Multi Jet Fusion (MJF) is an advanced powder-bed 3D printing process that delivers high-speed production, fine detail resolution, and strong, functional parts. The process uses parallel processing technology, making MJF ideal for rapid prototyping, iterative design testing, and scalable production of end-use parts.
- 01Excellent Detail & Precision
- Fine features, sharp edges, and smooth surfaces achieved through detailing agents and uniform heating.
- 02High-Speed Production
- Faster than other powder-bed 3D printing processes due to parallel agent deposition and infrared fusion.
- 03Consistent Mechanical Properties
- Uniform fusion process ensures high-strength, isotropic parts with no weak Z-axis layering.
- 04No Support Structures Needed
- Powder bed supports the part during printing, allowing for complex geometries and high-density builds.
- 05Scalable for Production
- Enables batch manufacturing with consistent quality, making it cost-effective for low to medium production volumes.
- 06High Material Efficiency
- Unfused powder is reusable, reducing material waste and lowering overall production costs.
Instant Quote Tool
From Upload to Delivery
Upload files, configure manufacturing specs, and track production in one workflow built for engineering teams.
Uploading files
75% complete
Step 01
Upload CAD Files
Automated file checks before production
Drop your CAD files and receive immediate manufacturability feedback. Critical geometry and wall checks run as soon as files are uploaded.
- Upload STEP, STL, OBJ, and production drawing files
- Auto-detection for thin walls and trapped volumes
- Instant design feedback before checkout
Industry Applications
MJF Applications Across Industries
Multi Jet Fusion (MJF) is used for production-grade nylon parts when speed and consistency are critical. High throughput and repeatable mechanical properties make it ideal for functional testing, bridge production, and short-run manufacturing.
MJF is a strong option when you want predictable nylon performance at production cadence, especially for short-run programs and repeat builds. It is commonly used for housings, brackets, and assemblies where consistency matters as much as speed.
Aerospace
Lightweight structural components and functional prototypes.
Example parts
Complex ducting systems, cable routing brackets, and sensor housings.
Why it fits: MJF delivers consistent mechanical properties across the entire build volume, critical for functional aerospace parts that must meet uniform stress requirements.
Aerospace
Automotive
Functional test brackets and assembly validation components.
Example parts
Interior clips, connector housings, functional test brackets, and HVAC ducting.
Why it fits: MJF produces isotropic nylon parts with consistent properties in all directions, enabling reliable functional testing without the directional weakness of other printing methods.
Automotive
Industrial Design
Design validation prototypes and pilot production parts.
Example parts
Design validation prototypes, textured housings, and pilot production parts.
Why it fits: MJF delivers fine detail with faster turnaround than SLS, producing high-quality nylon parts ideal for design validation cycles with tight review deadlines.
Industrial Design
Highlighted Case Study
Wearable hardware production
From Prototype to Production: 3D Printed Visors for Next-Generation VR Hardware
A VR hardware program used HP Multi Jet Fusion and Nylon PA12 to move from ergonomic iteration into real production, delivering visor components at a cadence of more than 1,000 parts every 72 hours.
• Over 1,000 visor components every 72 hours
• Prototype-to-production on the same MJF platform
Start a quote
Ready to manufacture your parts?
Upload your CAD files to get instant quotes for MJF 3D printing. Professional-grade manufacturing with fast turnaround times.
- Instant pricing with automated manufacturability analysis
- Production workflows built for repeatable quality
- Engineering support from prototype to production
Upload your CAD file
STL, STEP, OBJ, 3MF supported
Instant pricing and manufacturability feedback
- 6
- Manufacturing technologies
- 50+
- Engineering materials
- 1-500+
- Part quantities
Frequently Asked Questions
MJF Questions & Answers
Common questions about MJF 3D printing technology. Can't find what you're looking for? Reach out to our technical team.