Key Takeaways
- Hyundai’s Namyang R&D Center has deployed two ExOne VX1000 High‑Speed Sintering (HSS) printers, each offering a 1 000 × 550 × 190 mm build envelope.
- The HSS process can produce full‑scale polymer components such as door panels with dimensional repeatability better than ±0.2 mm across the build area.
- Compared with traditional SLS and FDM, HSS delivers up to 4× faster build rates and a 30 % reduction in post‑processing time.
- Automotive OEMs are shifting from “jigs‑only” to functional, end‑use parts for rapid prototyping and low‑volume production, accelerating the path to 3‑D‑printed vehicle structures.
Hyundai Accelerates Full‑Scale Polymer Printing
Why the automotive sector still needs 3‑D printed tooling
For years, the dominant narrative in automotive additive manufacturing (AM) has been the production of jigs, fixtures, and tooling. Those parts provide immediate cost savings and design flexibility, but they stop short of delivering finished vehicle components. Recent advances suggest that functional polymer parts—from interior panels to exterior skins—are becoming viable for low‑volume testing and even limited‑run production.
Hyundai’s strategic investment in ExOne’s HSS technology
Hyundai Motor Company’s Namyang Research & Development Center has installed two ExOne VX1000 HSS printers. Each machine boasts a 1 000 mm × 550 mm × 190 mm (39.4 × 21.7 × 7.5 in) build volume, allowing the fabrication of large‑area parts such as complete door panels in a single print.
“Hyundai is using High‑Speed Sintering exactly as we designed it, for full‑scale functional parts,” said Eric Bader, CEO of ExOne Global Holdings. “Maintaining accuracy and repeatability on large polymer parts is one of the hardest challenges in polymer 3‑D printing. We solved it, turning additive manufacturing into a reliable tool for automotive development.”
The printers employ a high‑intensity infrared (IR) lamp array that sinters polymer powder layer‑by‑layer in under 2 seconds per layer, delivering a build speed of up to 45 cm³/min—roughly four times faster than conventional selective laser sintering (SLS) systems of comparable size.
Performance metrics that matter to OEMs
| Metric | ExOne VX1000 HSS | Conventional SLS (e.g., EOS P 770) | FDM (large‑format, e.g., Stratasys Fortus 450mc) |
|---|---|---|---|
| Build volume (mm) | 1 000 × 550 × 190 | 700 × 700 × 600 | 914 × 610 × 610 |
| Layer time | ≤ 2 s | 8‑12 s | 30‑45 s |
| Part accuracy (± mm) | 0.2 | 0.3‑0.5 | 0.5‑1.0 |
| Material palette | PA12, PA11, TPU, high‑temp nylons | PA12, PA11, TPU | ABS, PC, ULTEM |
| Post‑processing | 30 % less (no extensive bead‑blasting) | High (bead‑blasting, infiltration) | Minimal (support removal) |
| Typical lead time (days) | 2‑3 (full‑scale) | 5‑7 | 4‑6 |
Data compiled from manufacturer specifications (ExOne 2026, EOS 2025, Stratasys 2025).
The VX1000’s larger footprint and faster sintering cycle enable Hyundai to iterate door‑panel designs in under a week—a timeline previously achievable only with metal tooling.
Implications for the Wider AM Market
From “killing apps” to production‑grade parts
Hyundai’s adoption signals a broader shift: polymer HSS is moving from prototyping to functional validation. As automotive programs demand lighter, more complex geometries, the ability to print large, dimensionally stable parts reduces the need for costly metal molds and shortens the design‑to‑test loop.
Competitive landscape
While BLT (Bespoke Laser Technology) continues to focus on metal powder‑bed fusion for structural components, and Stratasys expands its fused deposition modeling (FDM) portfolio for high‑temperature thermoplastics, ExOne’s HSS offers a unique middle ground—large‑area polymer parts with metal‑like strength and rapid turnaround. OEMs can therefore select the technology that aligns with the material performance, part size, and time‑to‑market requirements of each project.
Bottom Line
Hyundai’s deployment of two ExOne VX1000 High‑Speed Sintering printers marks a decisive step toward full‑scale, functional polymer components in automotive development. With a 1 m³ build envelope, up to four‑fold faster print speeds, and tighter dimensional control, HSS bridges the gap between rapid prototyping and low‑volume production. As the industry prepares for Formnext 2026, the move underscores a growing consensus: polymer additive manufacturing is no longer a niche tool for jigs—it is becoming a core capability for delivering next‑generation vehicle parts.
