Prusa CORE One L+ Critical Infrastructure Edition

In advanced manufacturing, aerospace, defense, and critical infrastructure, 3D printing has become an indispensable tool for producing custom tooling, rapid-response spare parts, and end-use components. However, this integration introduces significant security vulnerabilities when network-dependent printers are used, creating a critical attack vector for proprietary or classified CAD files.

The Prusa CORE One L Critical Infrastructure Edition is the definitive solution for these high-security applications. It provides the same exceptional performance as the standard CORE One L, including the massive 300x300x330 mm build volume and the state-of-the-art AC convection heatbed for flawless, warp-free printing of advanced materials.

The Critical Infrastructure Edition uses a dedicated mainboard with Wi-Fi connectors and circuitry physically removed. No camera is supplied, and the package includes an encrypted USB drive. Letters of volatility are provided by Prusa. Check those documents against your organisation's security requirements.

You can learn more about the CORE One L in our blog post.

True Air-Gapped Mainboard

Hardware-Level Security Enforcement

This edition features a custom-manufactured mainboard. All Wi-Fi connectors and related wireless circuitry have been physically removed, not just disabled via software. This provides a true, verifiable air-gapped solution, eliminating the attack vector of a network-connected device and ensuring full functionality in a 100% offline environment.

Secure Offline Workflow

Designed for Classified Data Handling

This bundle is built for a complete offline workflow. It supports an optional certified, encrypted USB drive for secure data transfer that is compatible with the platform. The machine ships with no camera, ensuring no optical data can be captured.

Large-Format, High-Performance Printing

Double the Build Volume for Demanding Projects

This machine delivers the full performance of the CORE One L. The massive 300x300x330 mm build volume allows for the creation of large functional parts, production fixtures, and full-size prototypes in a single piece. This enables rapid iteration and production of end-use components without compromising security.

Flawless Precision

What You Design is What You Get

The printer delivers on the promise of "What You Design is What You Get". Its rock-solid exoskeleton frame and precision kinematics ensure outstanding dimensional accuracy, as proven by CT scans. This precision is critical for industrial applications, guaranteeing that printed jigs, fixtures, or end-use components fit together perfectly as designed.

Optimized High-Speed Performance

Speed Without Sacrificing Structural Integrity

CoreXY motion, factory-tuned Input Shaper and a high-flow nozzle support faster printing. Prusa's supplied profiles balance speed with layer adhesion and part quality; the result still depends on the material, geometry and selected settings.

Simplified Flexible Filament Printing

Dedicated Path for Engineering-Grade Flexible Filaments

Printing with flexible materials is streamlined via a dedicated physical switch. Toggling this switch bypasses the primary filament sensor and opens a wider, less restrictive path for flexible filaments. This simplifies the loading of advanced flexible materials, while a second sensor in the print head maintains runout detection.

AC Convection Heatbed

Effortless Printing of Advanced Materials

The new AC heatbed is precision-milled from a thick block of aluminum, providing perfectly uniform heat distribution from edge to edge. This eliminates warping and cold corners. Two fans on its underside create a convection effect, rapidly heating the chamber up to a stable 60°C. This is the key to reliably printing demanding, high-performance materials like PC, ASA, or PA (Nylons) without warping or cracking.

Multi-Layered AC Electrical Safety

Redundant Hardware-Level Protection

The high-performance AC heatbed is protected by a multi-layered safety architecture. The system actively monitors for fault currents, similar to a residential RCD, and will immediately cut power if a leak is detected. This is backed by a redundant switching design using both a relay and a TRIAC, ensuring a hardware fail-safe if one component fails. The system is reinforced with a robust, shielded cable for the AC heatbed.

Zero-Setup Deployment

Unpack, Plug In, and Print

The CORE One L is a true "Unpack & Print" machine. It arrives fully assembled and pre-calibrated from the factory. There are no complex self-tests or calibrations required. The machine can be deployed and operational in minutes, streamlining the onboarding of new operators or integrating the unit into an existing production line with maximum efficiency.

Automated, Reliable Operation

A True "Start and Forget" Machine

This machine is engineered for maximum autonomy. It manages all critical systems on its own, including setting up the optimal print environment inside the chamber. The robust CoreXY kinematics and proven reliability ensure that large, long-duration print jobs can be run overnight and unattended, delivering consistent results with minimal downtime.

Optimized for 24/7 Industrial Use

Maximum Uptime for Continuous Production

The steel structure and accessible service parts are intended for regular workshop use. Plan maintenance around the machine's workload and check replacement-part availability when scheduling service.

High-Throughput Production

More Printing, Less Downtime

A larger build volume isn't just for large parts; it's for more parts. The print plate is 63% larger than the CORE One’s, allowing you to fit significantly more objects in a single batch. This capability drastically reduces the frequency of operator interventions for harvesting parts, minimizing downtime and maximizing the autonomous productivity of your operation.

Secure and Transparent Supply Chain

Manufactured in the EU and USA

Prusa manufactures the custom mainboard and other critical electronics in Prague. CORE One L final assembly takes place at Prusa facilities in Prague and Delaware. These are manufacturer operations; Fabinity provides UK sales and support.

Audited and Certified Manufacturing

ISO 9001:2015, 14001:2015, and 45001:2018 Certified

Prusa reports ISO certification covering quality, environmental management and occupational health and safety. Refer to the manufacturer's certificates for their scope.

Full Ownership and Control

No Walled Garden or Vendor Locks

You own your 3D printer, not just a license to use it. This machine is free from any vendor locks. You have complete freedom to use any material from any supplier, and you can use any slicer software you choose. This open-source philosophy ensures you are never locked into a proprietary ecosystem and maintain full control over your tools and processes.

Streamlined Operator Onboarding

Comprehensive Prusa Academy Course Included

To reduce the internal training burden, every CORE One L includes a full, comprehensive Prusa Academy online course at no extra cost. This detailed guide covers all aspects of running, printing, and maintaining the machine, making it the perfect tool for rapidly onboarding new employees or operators.

Robust and Serviceable Design

Engineered for 24/7 Operation and Longevity

The steel exoskeleton provides a rigid structure. Components are mechanically assembled rather than glued together, allowing the machine to be dismantled with standard tools for servicing. Check current replacement-part availability before planning repairs.

Built on a Strong Foundation

The Larger Sibling of an Award-Winning 3D Printer

The CORE One L is built upon the proven, award-winning platform of the Prusa CORE One. The original machine was recognized by All3DP as the "Best Enclosed 3D Printer of 2025" and called "by far the most advanced and functional printer of this type" by TechRadar. The CORE One L takes this same robust design, precision, and reliability and scales it for large-format applications.

Expandable Hardware Ecosystem

Optional Upgrades for Specialized Applications