Prusa CORE One L Critical Infrastructure - FDM 3D Printer

The Prusa CORE One L Critical Infrastructure Edition is an advanced solution designed for demanding industrial environments such as advanced manufacturing, aerospace, defense, and other critical infrastructures. It stands out for its doubled print volume compared to the CORE One, reaching 300 × 300 × 330 mm. It incorporates an actively heated chamber up to 60 °C and a new AC convection heatbed that prevents warping in high-performance materials.

Image 1: The Core One L installed in a workshop. Source: Prusa3D.

Its structure uses a robust steel and aluminum exoskeleton for greater stability and print quality. It supports offline operation, open-source software, and an open ecosystem with no vendor lock-in, allowing printing with any material and slicing software. It enables the production of large parts, full prototypes, or custom tools in a single pass, making it an ideal ally for operations where speed and flexibility are key.

Image 2: The Core One L excels in precision compared to competitors. Source: Prusa3D.

Regarding its technical capabilities, this unit maintains the same performance as the standard CORE One L: precision structure, robust CoreXY mechanics, high-flow extruder, and an AC convection heatbed to ensure uniform heating and prevent warping when printing demanding materials such as PA, PC, or ASA. It also features high-precision sensors, automatic bed leveling, compatibility with multiple materials, and is designed for 24/7 operation in production environments with simple maintenance and high uptime.

Image 3: The new heated bed and chamber take the Core One L to the next level. Source: Prusa3D.

Factory pre-calibrated with two nozzles (a high-flow CHT brass one and an abrasion-resistant one, both 0.4 mm), this printer is optimized for print farms with minimal downtime and will support the MMU3 multi-material printing system in early 2026. Its frame-integrated enclosure provides additional stability, while all removable parts can be easily detached with a screwdriver. It operates fully offline for security, with an optional removable Wi-Fi module, door sensor, fan monitoring, and five high-precision thermistors.

Image 4: A print farm with Core One L printers. Source: Prusa3D.

With a build volume of 300 × 300 × 330 mm and compatibility with 1.75 mm filament, this printer offers layer heights from 0.05 to 0.30 mm, ideal for demanding professional applications. Its electronics are based on a 32-bit board (xBuddy with STM32), Trinamic 2130 drivers, and 0.9° stepper motors, ensuring precision and control. The direct-drive extruder, compatible with the E3D V6 module via adapter, includes 10:1 planetary gears, an all-metal hotend, and a high-performance turbine fan with a quick-swap nozzle system. Maximum temperatures reach 290 °C on the nozzle, 120 °C on the bed, and 60 °C in the chamber.

Video 1: The Core One L in action. Source: Prusa 3D.

Supported Materials

The Prusa CORE One L is compatible with a wide range of materials, including PLA, PETG, Flex, PVA, PC, PP, CPE, and PVB. With the optional advanced filtration system, it also handles ABS, ASA, HIPS, and PA (nylon). Its heated chamber and convection system enable warp-free printing with advanced materials, featuring factory-tuned profiles for over 200 filaments to ensure dimensional precision and surface quality.

Beyond its mechanical performance, this “Critical Infrastructure” edition places special emphasis on information security and process integrity. It features a custom mainboard with no Wi-Fi or wireless circuitry, no camera, and comes with a certified encrypted USB drive to ensure that the entire workflow is carried out fully disconnected (air-gapped). It is designed for operation in environments handling classified or sensitive data, eliminating one of the main attack vectors of network-connected printers.

Image 5: Encryption system of the Core One L Critical Infrastructure. Source: Prusa3D.

Finally, in terms of standards and reliability, manufacturing takes place in EU and U.S. facilities with full supply chain control (PCBs made in Prague) and complies with recognized certifications such as ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. This reinforces its suitability for deployment in sensitive installations requiring traceability, audited quality, and operational continuity. In summary, this 3D printer not only offers volume and performance but also a security architecture designed for critical infrastructures.

Image 6: Prusa3D is a certified and recognized company. Source: Prusa 3D.

All software and firmware are open-source and available for modification. They support configuration, slicing, and offline updates without the need for internet access or accounts. Access over one million free 3D models for direct integration. The Prusa CORE One L represents a breakthrough in beltless 3D printing, combining robustness, ease of use, and versatility for users of all levels. Its innovative design ensures high-quality prints across a wide range of applications.