Prusa unveils CORE One L 3D printer, larger, heated and security-ready

Prusa Research has launched the CORE One L, a large-format enclosed 3D printer that doubles the print volume of the original CORE One while increasing the machine’s footprint by just 10%. Built on a CoreXY architecture and equipped with a rigid steel exoskeleton, the printer offers a 300 × 300 × 330 mm build volume—approximately 30 liters—within a desktop-class enclosure.

Key features include a newly developed AC convection heatbed made from cast aluminum with <2 °C temperature variance across 99% of the surface, and an actively heated chamber capable of reaching 60 °C. Dual fans mounted under the bed circulate hot air to eliminate cold corners, enabling warp-resistant printing across the entire build plate.

The system ships fully assembled and factory-calibrated, supporting high-speed printing across more than 200 materials. It features a high-flow Bondtech CHT nozzle and a hardened nozzle for use with abrasive filaments. Prusa’s Input Shaper and belt tensioning firmware are also built in, along with remote monitoring via a detachable 1080p night-vision camera.

Targeted at professional, secure, and offline-first environments

The CORE One L supports flexible workflows with no requirement for cloud connectivity. Users can print offline or integrate the printer into Prusa’s open ecosystem, which includes PrusaSlicer, EasyPrint, Prusa Connect, and access to over one million printable models through Printables.com.

A new “Critical Infrastructure Edition” is also available, designed for government, defense, and enterprise environments where air-gapped operation is mandatory. This version ships with a Wi-Fi-free mainboard, an optional encrypted USB drive, and formal letters of volatility.

Other industrial-grade features include the ability to connect the chamber exhaust to HVAC or filtration systems, NFC spool detection through the upcoming OpenPrintTag standard, and hardware safety measures for AC power monitoring and fault-current protection. Maintenance procedures are simplified with swappable hotends and the availability of five-year spare parts.

Prusa is manufacturing the CORE One L in both Prague and Delaware to serve global markets better. Production is currently underway, with shipping scheduled to begin in early November. Pricing starts at €1,699 ($1,792).

The road ahead: multi-material support

Prusa Research has outlined a development roadmap for the CORE One L, which includes hardware and software updates designed to expand its functionality over time. The printer is fully compatible with the company’s upcoming MMU3 multi-material unit, which enables printing with up to five filaments. The MMU3 for the CORE One L is scheduled for release in early 2026.

A forthcoming firmware update will introduce Print Sheet Recognition, allowing the system to scan a QR code using the built-in camera to verify correct sheet usage. Additional updates will enhance integration with the Open Print Tag standard and the new NFC-enabled spool holder.

More details on INDX, Prusa’s multi-material switching system for the CORE One platform, are expected to be released at Formnext.

Silicone printing toolhead adds hybrid capability to Prusa XL

Separately, the company is expanding the material capabilities of the Original Prusa XL with a new plug-and-play toolhead for silicone extrusion. Developed in partnership with startup Filament2, the system utilizes a precision mixing nozzle to process two-part liquid silicone in real-time.

Unlike traditional filament, the silicone is supplied in a tube routed through the Nextruder, enabling the XL’s toolchanger to combine flexible silicone parts with standard thermoplastics in the same job. According to Prusa, the system offers true industrial-grade silicone printing at a fraction of the cost of dedicated machines.

The silicone toolhead is the latest addition to the XL’s modular platform, which supports multiple extruders and materials. More details are expected at the upcoming Formnext trade show.