XR Devices (AR/VR/MR)

XR Devices Elastollan 1195A FDM with Bambu Lab X1E

In the high-stakes world of next-generation hardware development, particularly within the demanding XR Devices (AR/VR/MR) sector, the gap between a CAD model and a functional, test-ready prototype can feel like a chasm. Engineers are constantly battling to create components that are not only dimensionally accurate but also possess the specific material properties required for human interaction and environmental resilience. This is especially true for flexible components like facial interfaces, gaskets, controller grips, and cable strain reliefs. These parts demand a unique combination of durability, flexibility, and chemical resistance. Enter BASF Elastollan 1195A, a polyester-based thermoplastic polyurethane (TPU) that, on paper, is an engineer's dream. With its 95A Shore hardness, high tear strength, and excellent abrasion resistance, it’s perfectly suited for parts that need to endure repeated flexing, compression, and contact with skin oils.

The dream, however, often turns into a nightmare on the manufacturing floor. Elastollan 1195A is notoriously difficult to process using conventional desktop Fused Deposition Modeling (FDM) setups. Its high viscosity requires precise thermal control to ensure proper flow without degradation, and its hygroscopic nature means it eagerly absorbs atmospheric moisture. Printing this material on an open-frame machine is an exercise in frustration, leading to a litany of failures: catastrophic delamination, severe warping that lifts entire models off the build plate, and pervasive stringing that turns a clean design into a web-like mess. These issues aren't just cosmetic; they represent fundamental structural flaws. Moisture in the filament turns to steam in the hotend, creating voids and compromising inter-layer adhesion, leading to a dramatic reduction in Z-axis strength. For a functional prototype, this is a non-starter. At MechanoFab, we've engineered a robust solution to this specific challenge by pairing this high-performance TPU with the Bambu Lab X1E, creating a production cell that tames this difficult material and delivers on its full engineering promise.

Compliance by Design: Meeting XR Standards from the First Print

Developing hardware for the consumer and enterprise electronics market means navigating a complex labyrinth of regulatory compliance. Prototyping with a process that inherently respects these standards from the outset is not a luxury; it's a strategic necessity that accelerates time-to-market. Our specialized FDM process for Elastollan 1195A is architected to produce parts that align with critical international standards, including CE, FCC, RoHS, and UL.

RoHS (Restriction of Hazardous Substances): This is the most direct and crucial compliance win. BASF Elastollan 1195A is an RoHS-compliant material. Our process integrity is paramount here. By using a dedicated, pristine material path within the Bambu Lab X1E and ensuring no cross-contamination, we guarantee that the final printed part maintains the material’s inherent compliance. The part that comes off our build plate is the same, from a substance perspective, as the raw filament. This allows your engineering teams to proceed with functional and compliance testing immediately, confident that the material itself will not be a point of failure.

CE Marking & UL Certification: These standards relate to product safety, a non-negotiable aspect of any device worn by a user. For a flexible component, safety is synonymous with mechanical integrity. A facial gasket that cracks or a grip that delaminates under stress can be a safety hazard. The primary weakness of FDM is its Z-axis anisotropy—the bond between layers is inherently weaker than the strength of an extruded strand. Our process directly mitigates this. The X1E's actively heated chamber (maintained at a stable 60°C) ensures that previously printed layers remain at an optimal temperature to form strong, covalent bonds with the new layer being deposited. This significantly enhances inter-layer adhesion, pushing the part's Z-axis strength closer to its isotropic potential. The result is a durable, reliable component that won't fail under expected operational stresses, a key prerequisite for both CE and UL evaluation. Furthermore, for components near electronics, the void-free prints produced by our controlled process ensure consistent dielectric properties, preventing unexpected electrical behavior.

FCC (Federal Communications Commission): While a TPU part is not an active radiator of electromagnetic energy, its role in an assembly is often critical for maintaining the enclosure's overall EMI/RFI shielding effectiveness. Many XR devices pack sensitive receivers and powerful transmitters into a compact form factor. Gaskets and seals must provide a perfect, contiguous fit to prevent RF leakage. The dimensional instability of printing Elastollan 1195A on lesser machines—warping, shrinking, corner lift—results in parts that do not match the design intent. These gaps can compromise the entire device's FCC certification. Our process, leveraging the X1E's stable thermal environment and high-precision motion system, delivers net-shape parts with a typical dimensional accuracy of ±0.2 mm. This precision ensures that your gaskets seal perfectly and your components fit as designed, preserving the integrity of your device's RF shielding strategy.

Core Process & Material Specifications

To achieve this level of quality and repeatability, we operate within a tightly controlled process window. The table below outlines the key parameters and material properties that define this manufacturing capability. These are not theoretical maximums but the real-world specifications we hold to deliver functional, compliant parts.

``

The Economics of Precision: Optimizing TCO for Prototyping

This service is optimized for production volumes of 1-20 units, the sweet spot for iterative design, functional validation, and the creation of custom jigs and fixtures. While it might be tempting to view the cost of a 3D printed part on a per-gram basis, experienced engineers understand that the true metric is Total Cost of Ownership (TCO), especially during the critical prototyping phase. This is where our specialized process provides a massive economic advantage.

The core of our factory advantage lies in solving the fundamental material science challenges of high-viscosity, hygroscopic TPU. The Bambu Lab X1E's actively heated and fully enclosed chamber is the key. By maintaining a stable thermal environment up to 60°C, we achieve two critical outcomes. First, we create the ideal conditions for melt flow and layer fusion. This directly prevents the warping and corner curling that plague this material on open-frame printers, which suffer from uncontrolled cooling and thermal gradients. A failed print is the most expensive print—it costs material, machine time, and, most importantly, delays your development schedule. Our process dramatically increases first-print success rates, eliminating this source of waste and delay.

Second, the heated environment is critical for mitigating hydrolysis. Elastollan 1195A must be dried extensively before printing, but the enclosed, warm chamber helps prevent any residual moisture from causing catastrophic defects during the print. This meticulous thermal management allows us to achieve superior layer adhesion, directly compensating for FDM's inherent Z-axis weakness. The parts you receive from MechanoFab are not brittle facsimiles; they are tough, functional components ready for real-world testing.

This obsession with process control culminates in a significant reduction in post-processing labor, a major hidden cost in additive manufacturing. We have optimized our print profiles on the X1E to minimize stringing and oozing, producing clean, net-shape flexible parts. This means your engineers don't have to waste valuable hours meticulously cleaning up a prototype with a scalpel or heat gun. The part that comes off our build plate is dimensionally accurate and ready for functional testing, fit checks, and even RoHS compliance verification. By eliminating secondary cleanup and the risk of failed prints, we compress your design-build-test cycle. The ability to get a reliable, functional part in hand quickly, one that fits and performs as expected, drastically lowers the TCO of your prototyping efforts and accelerates your path to a final, manufacturable design.

From CAD to Compliant Component

Stop fighting with difficult materials and unreliable processes. Leverage our specialized production cell to get the flexible, high-performance XR components you need, without the headaches. Our process delivers dimensionally accurate, high-tear-strength parts ready for immediate functional testing.