Prusa CORE One L - 3D printer

3D printer Prusa CORE One L – large format and closed CoreXY platform

Prusa CORE One L is a closed CoreXY 3D printer (FFF/FDM), designed for reliable printing of large details and series without compromising geometry. With a print volume of 300 × 300 × 330 mm (≈ 30 L), actively heated chamber up to 60°C and a new AC (mains powered) convection heating plate, the model is oriented towards working with more demanding materials and minimizing warping during “edge-to-edge” printing on the bed.

• Print volume: 300 × 300 × 330 mm (≈ 30 L)
• Layer height: 0.05–0.30 mm
• Temperatures: nozzle up to 290°C, bed up to 120°C, chamber up to 60°C
• Extruder: Nextruder, Direct Drive, 360° cooling; 0.4 mm nozzles (high-flow + abrasion-resistant included)
• Automations: load cell for first layer, mesh bed leveling, Input Shaper, Phase Stepping
• Connectivity and printing: USB/LAN and remote control via Prusa Connect/Prusa App; NFC receiver
• Camera: 1080p with night vision (Buddy3D), included in the box

If you are looking for a printer “for everything” – from functional prototypes to small series production – CORE One L is a strong choice for workshops, studios, educational labs, and companies that want predictable results and a transparent ecosystem.

Who is Prusa CORE One L for

This 3D printer is aimed at users who:

• print large details in one piece (instead of cutting the model into parts and gluing);
• work with materials that require controlled environment (chamber up to 60°C) for better adhesion and less warping;
• appreciate minimal setup – the idea is “Unpack & Print,” with a quick start after unpacking;
• want offline mode and control over data (without mandatory accounts and cloud).

Technology and quality

CORE One L uses CoreXY kinematics and a closed housing, which helps with stability at higher speeds and a more predictable thermal environment. Several elements are key to the printing process:

• AC convection heating plate made of solid aluminum, with active air circulation for a more even temperature in the chamber and faster heating up to 60°C.
• Nextruder (Direct Drive) with 360° cooling, aimed at clean overhangs and stable details; Prusa indicates the possibility of quality overhangs up to 75° with the correct profile.
• 0.9° X/Y stepper motors and optimizations against VFAs (vertical fine artifacts) – important for details with visible walls (product housings, panels, faceplates).
• Automatic first layer through load cell and automatic mesh bed leveling (within the print area) – less manual calibration and fewer "surprises" at startup.

The layer height range of 0.05–0.30 mm covers both detailed printing (prototypes, visual elements) and faster functional parts.

Performance and workflow

Instead of chasing "just speed," the approach here is speed + repeatability. The printer comes with Input Shaper and Phase Stepping, and the high-flow nozzle (CHT, 0.4 mm) is aimed at stable flow with standard and engineering materials. The kit includes two nozzles: high-flow (installed) and abrasive-resistant 0.4 mm for filled/abrasive filaments.

For monitoring and control, the following are available:

• Prusa Connect and Prusa App (iOS/Android) for remote monitoring and control;
• 1080p Buddy3D camera with night vision (included; installation is optional);
• firmware update via USB or through the Prusa ecosystem.

If you are working in an environment with strict security requirements, CORE One L can be used completely offline, and the Wi-Fi module can be turned off/dismantled according to the manufacturer's description.

Compatibility and software

The main recommended workflow is through PrusaSlicer – free, open-source, and cross-platform (Windows/macOS/Linux).

According to official data, PrusaSlicer supports the import of STL, STEP, 3MF, OBJ, and AMF, facilitating integration with CAD/3D software (export to STEP/STL or direct import for suitable projects).

The connectivity combines wired LAN and Wi-Fi/PrusaLink capabilities in the new generations of printers in the series, as described in the documentation for CORE One/+/L by Prusa.

For color/multimaterial printing: CORE One L is compatible with MMU3, as Prusa indicates availability for CORE One L in early 2026 (including "Jan 2026" mentioned in the specifications).

Design, dimensions, and interfaces

The construction is oriented towards long-term operation: steel frame (exoskeleton) and panels designed for stability and easy maintenance.

• Dimensions: 469 × 521 × 635 mm (W×D×H) and weight: 21.9 kg.
• Footprint (placement area): 456 × 488 mm (stated in comparison CORE One L vs CORE One).
• Screen: 3.5″ color graphic display (65k) with touch control.
• Connectivity: Ethernet, NFC receiver; printing via USB/LAN and remote control.
• Sensors: 2× filament sensor, load cell, door sensor, fan monitoring, 5× precision thermistors (Semitec).

Professional scenarios

Here are realistic examples where CORE One L provides measurable benefits:

• Engineering prototyping: printing large housings/functioning parts in one piece (fewer assemblies, better strength and fit accuracy).
• Templates, assembly fixtures, and fasteners: larger plate = more details in one cycle for night series (less "downtime" for the operator).
• Architectural models and exhibition models: cleaner walls (VFA optimizations) and detail control through a 0.05–0.30 mm layer.
• Cosplay/prop parts: helmets and large elements without cutting patterns, with predictable adhesion at the edges.
• Small series for end products: stable profiles, monitoring chamber, and remote notifications (optional), suitable for small print-farm environments.

Limitations, best practices, and technical specifications

No FFF/FDM system is “magic.” For best results, keep in mind:

• Emission materials (e.g., ABS/ASA/HIPS/PA): for these, Prusa indicates the need for an optional Advanced Filtration System – especially important when working in enclosed spaces and shared environments.
• Dry filament = fewer problems: with PA/PC/filled materials, moisture leads to “cracking,” poor surface, and weaker strength (use drying/storage box).
• PP and large flat details: PP is a difficult-to-adhere material – plan for appropriate print surface, cleanliness, and temperature, and test small samples.
• Abrasive filaments (CF/GF/metal fillers): use the included abrasion-resistant nozzle and monitor wear.
• TPU/Flex: use the designated “Flex mode”/easier feeding and keep the path as straight as possible; do not over-tighten the pressing mechanisms.
• Safety: activate the door sensor and follow the warnings – the manufacturer explicitly warns that disabling it may lead to injury or damage.

Technical specifications