Prusa Research has launched the Prusa Core One L, a large-format enclosed CoreXY 3D printer designed for professional and industrial applications requiring substantial build volume without sacrificing desktop compatibility. The Prusa Core One L delivers 300×300×330 mm print volume – approximately 30 litres, whilst maintaining dimensions only 10% larger than the standard CORE One, representing a 200% increase in print capacity. The machine arrives fully assembled and factory-calibrated, available immediately through the company’s online shop with first units already shipped to reviewers.
The printer targets engineers prototyping large components, prop makers requiring single-piece helmet prints, and manufacturers working with advanced materials. Despite the substantially increased build volume, the CORE One L weighs 0.5 kg less than its smaller sibling through strategic material choices including aluminium side panels and redesigned bottom section whilst maintaining the laser-cut steel exoskeleton.
Prusa CORE One L Features
The most significant innovation centres on the completely redesigned heatbed, engineered specifically to address uneven heating and cold corners that compromise large-format printing. The cast aluminium heatbed incorporates integrated dual-loop heating elements delivering temperature variance less than 2°C across 99% of the print surface, enabling reliable edge-to-edge printing without warping concerns.
For the first time on a Prusa printer, the system actively utilises the heatbed’s underside for chamber heating. Two fans create forced convection by directing air across the hot surface, with specially designed deflectors distributing heated air throughout the chamber. This configuration achieves 60°C chamber temperature 25% faster than the CORE One despite the larger volume, creating optimal conditions for advanced materials including ABS, ASA, Nylon, and Polycarbonate.
The printer automatically manages chamber temperature through motorised top vent operation. When printing low-temperature materials like PLA or PETG, the extruder-mounted lever opens the vent automatically; for high-temperature materials, the vent closes to maintain consistent thermal environment. An exhaust port accommodates optional HVAC systems or HEPA filtration for particle-sensitive applications.
Intelligent Power Management and Multi-Regional Compatibility
The heatbed incorporates sophisticated power management enabling consistent performance across different mains voltages without component compromises typically required for 110V regions. The system analyses voltage waveforms in real-time, automatically distinguishing between 110V and 230V grids and configuring heating elements in serial or parallel accordingly. This detailed monitoring filters minor grid fluctuations, virtually eliminating false power-loss triggers.
Multi-layered AC safety architecture includes active fault current monitoring similar to residential RCD systems, with redundant switching using both relay and TRIAC components. If one switching element fails, the other provides hardware fail-safe circuit disconnection. Shielded cabling provides additional protection layers.
Production-Grade Print Quality and Precision
The printer incorporates proven CORE One technologies including rigid CoreXY kinematics and 360° extruder cooling enabling 75° overhangs with minimal support requirements. Recent research into VFAs (Vertical Fine Artifacts) has been implemented through PrusaSlicer’s “Consistent Surfaces” feature, delivering production-quality finishes directly from the print bed by optimising path planning and speeds.
Key technical specifications:
- Build volume: 300×300×330 mm (~30 litres)
- Chamber temperature: 60°C with active management
- Heatbed uniformity: <2°C variance across 99% of surface
- Nozzles included: Genuine Bondtech CHT high-flow nozzle and wear-resistant nozzle
- Camera: 1080p with night vision
- Dimensional accuracy: CT-scan verified precision
- Overhang capability: 75° without supports
The machine includes factory-tuned Input Shaper and Phase Stepping calibration, with new belt tuning capability using stroboscope effect enabling precise adjustment in two minutes. The printer arrives with comprehensive Prusa Academy online course covering operation, printing, and maintenance procedures.
Professional Features and Maintenance Design
The CORE One L emphasises operational efficiency through:
Zero-setup deployment: Language selection and optional network connection wizard constitute the entire setup process, enabling immediate productivity without extensive calibration or training requirements.
Rapid maintenance: Nozzle swaps complete in 30 seconds; entire hotend replacement requires approximately one minute without preheating through thumbscrew and connector system. LoadCell technology eliminates recalibration requirements after nozzle changes.
Production efficiency: Larger build volume reduces operator interventions in print farm environments. Analysis demonstrates that CORE One L farm configurations require 35% less operator time compared to equivalent smaller printer deployments across identical shelf space.
Material flexibility: Physical switch modifies filament insertion point for low-resistance loading of flexible materials. Both high-flow and wear-resistant nozzles included enable immediate processing of diverse material specifications.
Security-Focused Design for Critical Infrastructure
For the first time, Prusa Research offers a Critical Infrastructure Edition through standard sales channels. This variant features custom-manufactured mainboard without Wi-Fi circuitry, certified encrypted USB drive, and letters of volatility documentation meeting strict security requirements for enterprise, government, and defence sectors.
All connectivity remains optional across all versions. The printer operates completely offline from initial setup through production, with removable Wi-Fi modules and open-source firmware enabling full code inspection. Electronics manufacturing occurs on Prusa’s dedicated PCB production line in Prague, EU, and Delaware, USA facilities.
The CORE One L represents Prusa’s first printer released following ISO certifications for Quality Management (ISO 9001:2015), Environmental Management (ISO 14001:2015), and Occupational Health & Safety (ISO 45001:2018).
Ecosystem Integration and Future Expansion
The printer integrates with Prusa’s complete toolchain including PrusaSlicer, Connect remote management platform, iOS/Android applications, and Printables model library containing over one million designs. EasyPrint online slicer enables operation from smartphones, tablets, or browsers with wireless file transfer capabilities.
The CORE One L supports upcoming MMU3 multi-material system enabling five-filament printing, scheduled for early 2026 availability. Future firmware updates will enable Print Sheet Recognition through camera-based QR code scanning. Optional OpenPrintTag NFC-enabled spoolholders will provide automatic material recognition using the open-source, cross-brand standard developed by Prusa Research and partner companies.
Spare parts availability guaranteed for minimum five years, supported by 24/7 technical support in seven languages staffed by experienced operators.
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