Home / Resources / Blog Articles / Precision at Speed: How MJF Printing Custom Parts Is Transforming Modern Manufacturing
June 20, 2025
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In today's competitive industrial landscape, the ability to rapidly create, iterate, and deploy custom components is more than just an advantage — it's a necessity. As companies strive to shorten product lifecycles, reduce inventory waste, and cater to increasingly personalized demands, additive manufacturing (AM) is rising to the challenge.
One technology at the forefront of this shift is Multi Jet Fusion (MJF), developed by HP. MJF offers a breakthrough in producing custom parts that are both mechanically robust and economically feasible, even at low to medium production volumes. With no tooling, fast turnaround, and freedom to design intricate geometries,MJF printing custom parts is enabling manufacturers, engineers, and designers to unlock new levels of agility and performance.
From aerospace to consumer electronics, MJF is rapidly becoming the go-to solution for creating precision-engineered, application-ready components with short lead times and impressive repeatability. This article Full-Linking dives into the applications and performance benefits that make MJF printing custom parts a standout choice in the world of additive manufacturing.
Speed is one of the primary reasons manufacturers adopt MJF. The combination of wide-area infrared heating and simultaneous agent deposition results in build times that are substantially shorter than FDM or SLS. In practice, this means that engineers can go from CAD model to usable part in as little as 24 hours. What makes MJF printing custom parts especially compelling is its ability to produce multiple parts at once without increasing build time. The system doesn't care how many parts are being printed — only how tall the tallest one is. This parallelization means that MJF is not just fast, but also scalable. You can fit hundreds of small custom components into a single build, making it a viable method for low-volume production where every part might be slightly different from the next. This is particularly valuable in industries like medical devices, where every product must be tailored to a patient, or in consumer electronics, where short product lifecycles demand rapid redesign and iteration.
Parts produced through MJF printing custom parts workflows are known for their excellent strength and toughness, which are often comparable to — or even better than — parts made using traditional plastic injection molding. This performance is largely attributed to MJF's ability to produce parts with near-isotropic properties, meaning the material behaves similarly in all directions. This isotropy is critical in applications that involve dynamic loading, such as hinges, brackets, or enclosures exposed to vibration. MJF parts also demonstrate good fatigue resistance, allowing them to endure repeated stress cycles over time. These properties are essential when building parts for functional testing or final-use scenarios. Material options also play a role in performance. MJF-compatible polymers such as PA 12 and PA 11 offer high tensile strength, chemical resistance, and low moisture absorption. Glass-filled variants like PA 12 GB further extend the material's stiffness, making it suitable for load-bearing or fixture-type applications.
One of the challenges in 3D printing has always been achieving fine details and high-quality finishes straight from the machine. MJF stands out here, producing parts with smoother surfaces (Ra ~6–12 μm) and cleaner edges than most powder-bed or filament-based systems. This is partly due to the small powder particle size and precise inkjet control, which together enable high-resolution features such as thin walls, embossed logos, and tight-fitting joints. In the context of MJF printing custom parts, this capability translates to better aesthetics, easier integration into assemblies, and reduced finishing costs. Engineers can incorporate functional features like internal channels, press-fit sockets, or snap-fit latches directly into their designs, knowing that MJF will print them accurately without warping or significant post-processing.
Design freedom is perhaps the most strategic advantage of MJF. Because there are no molds or cutting tools involved, parts can be designed with virtually no constraints — enabling features that are impossible or prohibitively expensive with traditional methods. This is especially important for lightweight structures, as MJF enables the use of lattice geometries, topology optimization, and internal cavities. These strategies reduce material use without sacrificing strength, making them ideal for aerospace, automotive, or robotics components. Another advantage is the ability to consolidate multiple components into a single, integrated part. Rather than assembling a housing from five separate molded pieces, an engineer can design a monolithic version that prints as one unit. This reduces part count, eliminates fasteners, and increases overall reliability — all while taking advantage of the speed and cost benefits of MJF printing custom parts.
Automotive OEMs and suppliers are increasingly using MJF for prototyping and short-run production. Whether it's a custom bracket for a dashboard assembly, a fluid routing adapter for a test rig, or a lightweight housing for an electronic sensor,MJF printing custom parts enables rapid validation and production without waiting for expensive tooling. MJF also supports just-in-time manufacturing for service parts, reducing inventory and warehousing costs. This is especially valuable in motorsports, where unique parts must be tailored to each vehicle and iteration speed is critical.
In aerospace, weight reduction, reliability, and documentation are paramount. MJF is trusted to produce ductwork, mounting hardware, and custom UAV components with the mechanical performance and repeatability needed for flight-critical systems. Moreover, MJF parts can be serialized, scanned, and traced throughout their lifecycle, helping aerospace suppliers meet strict quality and traceability requirements while still benefiting from the flexibility of additive manufacturing.
The healthcare sector thrives on personalization. From prosthetic limbs to patient-specific surgical guides,MJF printing custom parts enables tailored solutions that improve patient outcomes and clinician performance. Because MJF can reliably produce biocompatible and sterilizable parts, it's well-suited for reusable medical tools, orthopedic fixtures, or diagnostic housings. The high surface resolution ensures that anatomical shapes, bone interfaces, or guide channels are accurately produced with minimal finishing.
Consumer-facing products need to combine form and function. MJF excels at producing housings, enclosures, and mechanical parts for gadgets, wearables, and IoT devices. Designers can create ergonomically optimized shapes, integrate snap mechanisms, and iterate on styles within a few days. The absence of molds also means companies can personalize each unit with names, colors, or branding — making MJF printing custom parts the perfect tool for limited-edition or customizable product lines.
MJF is more than just a 3D printing technique — it's a full-fledged manufacturing method that bridges the gap between prototyping and production. For businesses that demand speed, precision, and flexibility,MJF printing custom parts offers an unmatched combination of benefits. It empowers engineers to design without limits, manufacturers to produce without tooling, and businesses to innovate without delay. Whether you're producing a single ergonomic prototype or a thousand personalized housings, MJF delivers consistent results with industrial-grade quality. As manufacturing continues to move toward agility and customization, the companies that embrace MJF will be the ones that lead in product performance, time-to-market, and customer satisfaction.
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