Prusa CORE One L - FDM 3D Printer

The Prusa CORE One L is a versatile 3D printer designed for a wide range of projects, including hobbies, businesses, workshops, makerspaces, and design studios. It stands out for its doubled build 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 demanding materials. 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 without vendor restrictions, allowing printing with any material and slicing software.

Image 1: The Core One L compared with the Core One. Source: Prusa3D.

Discover a professional 3D printing solution that combines CoreXY kinematics to achieve high speeds without sacrificing reliability, built on a rigid exoskeleton frame that ensures optimal stiffness and superior surface quality. Thanks to its AC convection heatbed and active dual-fan air circulation, the chamber heats evenly up to 60 °C, eliminating cold spots and minimizing warping. Setup is immediate — it’s configured and ready to print in minutes, with no manual calibration required — while a detachable 1080p camera with night vision and mobile notifications allows remote monitoring of print progress.

Image 2: The Core One L installed in a workshop. Source: Prusa3D.

The extrusion system incorporates the Nextruder with 360° cooling, allowing overhangs up to 75°, while Input Shaper technology maintains quality even at high-speed printing. Technical materials can be printed without cracks or corner lifting, and filament loading is simplified with a flexible load mode, physical switch, and dual sensors. First-layer calibration is fully automatic through load cell, mesh bed, and phase stepping; moreover, compatibility with GPIO boards and accelerometers makes it a versatile platform for industrial environments.

Image 3: The Core One L excels in precision compared to competitors. Source: Prusa3D.

Factory pre-calibrated with two nozzles (one high-flow brass CHT and one abrasion-resistant, both 0.4 mm), this printer is optimized for print farms with minimal downtime and will support the MMU3 multi-material system in early 2026. Its enclosure integrated into the frame provides additional stability, while all removable parts can be easily detached with a screwdriver. It operates 100% 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 mm to 0.30 mm — ideal for demanding professional applications. Its electronics, based on a 32-bit board (xBuddy with STM32), Trinamic 2130 drivers, and 0.9° stepper motors, ensure precision and control. The direct-drive extruder, compatible with E3D V6 modules via adapter, includes 10:1 planetary gears, an all-metal hotend, and a high-performance turbine fan with quick-swap nozzle system. Maximum temperatures reach 290 °C for the nozzle, 120 °C for the bed, and 60 °C for the chamber.

Video 1: The Core One L in action. Source: Prusa3D.

Operation is managed through a 3.5″ full-color touchscreen (65k colors), with firmware updates via USB, through Prusa Connect, or via mobile app. Connectivity includes Ethernet, NFC receiver, USB/LAN, and remote integration. Installed sensors include dual filament sensors, load cell for bed calibration, door sensor, and monitored fans. Printing is done on a magnetic heatbed with removable PEI-coated stainless-steel sheets, complemented by automatic first-layer leveling, mesh bed, Input Shaper, and phase stepping. An optional internal 1080p camera with night vision is available for advanced monitoring.

Image 5: The Core One L interface. Source: Prusa3D.

Additionally, for environments where security is essential, Prusa3D offers the Critical Infrastructure Edition. This version emphasizes data security and process integrity. It includes a custom motherboard without Wi-Fi or wireless circuits, no camera, and comes with a certified encrypted USB drive to ensure the entire workflow is fully air-gapped, designed for secure environments.

Image 6: Security encryption detail of the Critical Infrastructure Edition. Source: Prusa3D.

Supported Materials

The Prusa CORE One L supports a wide range of materials, including PLA, PETG, Flex, PVA, PC, PP, CPE, and PVB. With the optional advanced filtration system, it can also handle 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, ensuring dimensional precision and surface quality.

Video 2: Presentation of the Core One L. Source: Prusa3D.

Software and Compatibility

1. PrusaSlicer: Open-source slicing software with over 200 tested profiles for one-click slicing.
2. EasyPrint: Web-based slicing from phones, tablets, or browsers with direct model sending.
3. Prusa Connect: Secure remote management, job scheduling, and monitoring integrated with PrusaSlicer.
4. Prusa App: For iOS and Android, offering printer monitoring, notifications, and direct G-code upload.

All software and firmware are open-source and available for modification. It supports offline configuration, slicing, and updates without the need for internet or accounts. Access over one million free 3D models for direct integration.

The Prusa CORE One L represents a leap forward in belt-free 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.