In-House Multi Jet Fusion
Industrial MJF 3D Printing for Functional Nylon Parts
RapidPrintParts provides in-house Multi Jet Fusion (MJF) for low-volume end-use and functional nylon parts. Based in Shenzhen, China, our focus is producing industrial parts that are built to be used—functional prototypes, jigs and fixtures, mechanical components, replacement parts, and bridge-production components—by matching process and material to real operating requirements.
Before recommending MJF or an alternative process, we evaluate the application's material, load, temperature, tolerance, finish, quantity, and target timing. If another in-house process (FDM/FFF, SLA, SLS) is a better fit after engineering review, we will recommend accordingly.
Request an Engineering ReviewWhen MJF Is a Good Fit
MJF at RapidPrintParts is a strong option for a range of functional applications where nylon performance and production speed matter.
Functional Prototypes & Validation
Functional prototypes and engineering validation parts that must be tested in nylon, with mechanical properties close to injection-molded parts.
Jigs, Fixtures & Tooling
Jigs, fixtures, robot end-of-arm tooling (EOAT), assembly aids, and brackets that require strength, accuracy, and repeatability.
Mechanical Components
Mechanical housings, ducts, covers, and custom replacement parts that must withstand real operating conditions.
Low-Volume Production
Low-volume end-use parts and bridge production before tooling, plus complex components that are slow or uneconomical with traditional manufacturing.
Typical buyers include machinery/automation OEMs, robotics integrators, industrial hardware developers, MRO teams needing urgent replacements, and contract manufacturers seeking overflow or a missing process/material.
MJF Materials Offered
Material selection is guided by the operating environment and required performance. During engineering review, we assess load, temperature, and any chemical, flame, or ESD requirements to help select an appropriate nylon or TPU for the application.
PA12
Balanced mechanical properties
PA11
Improved impact resistance
PA12 GF
Glass-filled for stiffness
TPU
Flexible and impact-absorbing
Typical Build Envelope & Tolerance References
Typical MJF build envelope: approximately 380 × 284 × 380 mm
Typical tolerance reference: ±0.2 mm or ±0.3%
These are typical references; guaranteed tolerance requires engineering review, a 2D drawing with critical dimensions, and alignment on inspection scope.
Post-Processing & Functional Finishing
Depending on application and cosmetic needs, post-processing and finishing may include:
- • Blasting, sanding, polishing, and vapor smoothing
- • Dyeing, painting, and marking
- • Inserts, tapping, drilling, and CNC secondary machining
We will recommend only the finishing steps that align with your part's functional and appearance requirements.
Quality & Documentation Options
Quality support may include, when agreed for the project:
- ✓ First article inspection
- ✓ Dimensional inspection reports
- ✓ Material documents
- ✓ Certificates of conformity
- ✓ Shipment reports
Inspection scope and documentation are defined during the engineering review based on part criticality and customer requirements.
Practical Selection Factors & Limitations
Understanding the boundaries of MJF helps ensure your parts are designed for success from the start.
Part Size
Keep designs within the typical MJF build envelope noted above; oversized parts may require a different process or a split-and-assemble approach (requires engineering review).
Tolerance Strategy
Apply tight tolerances only where functional; use a 2D drawing to identify critical features. Guaranteed tolerance requires engineering review.
Assembly Features
Threads and metal inserts can be added via post-processing; confirm torque, pull-out, or wear needs during review.
Finish & Quantity
Specify whether parts are functional-only or require cosmetic finishing. Provide expected order quantities and whether parts are one-off, batch, or recurring to align production and quality plans.
Who We Serve Best
Our customers typically value speed, complexity, low volume, lightweighting, tooling avoidance, and supply flexibility over the lowest unit price alone, and can share clear technical requirements and usable CAD.
Machinery & Automation OEMs: fixtures, guards, ducts, brackets
Robotics & Integrators: EOAT, grippers, sensor brackets
Industrial Hardware Teams: EVT/DVT/PVT and pre-tooling builds
MRO & Spare-Parts Teams: obsolete or urgent replacement parts
Contract Manufacturers & Print Bureaus: overflow or process/material gaps
What to Send for Fast Engineering Review
For the quickest and most accurate recommendation, please provide:
- 1. Application and operating environment
- 2. Quantity and repeat demand
- 3. Material requirement (or performance targets)
- 4. Critical dimensions and tolerances
- 5. Load, temperature, chemical, flame, or ESD requirements
- 6. Finish and post-processing needs
- 7. Target lead time or milestone
- 8. STEP/STP plus 2D drawing, and any NDA requirements
Start with an Engineering Review
Share your STEP/STP and 2D drawing plus the eight inputs above. Our team will evaluate material, process fit, tolerance and finishing needs, and documentation requirements, then recommend the most suitable in-house process—MJF, SLS, FDM/FFF, or SLA—for your functional parts.
Contact RapidPrintParts
Get in Touch
We are here to answer your questions about industrial additive manufacturing and functional 3D printed parts. Reach out to us through the following methods:
Email: [email protected]
Address: No. 17-1, Guanlan Avenue, Longhua District, Shenzhen, Guangdong Province, Shenzhen 3D Printing Industrial Park