Prusa is expanding its CORE One series with the CORE One L. The enclosed CoreXY printer is designed for large functional parts and prototypes, but remains compact. The build volume is 300 × 300 × 330 mm (~30 l). This means that helmets or housings fit onto the plate in one piece. According to the data sheet, the device weighs 21.9 kg and measures 469 × 521 × 635 mm.
The core component is a newly designed AC convection heating bed made of solid aluminum. A dual heating loop is designed to maintain the temperature over 99% of the surface with less than 2°C deviation. Two fans direct heat from the underside of the heating bed into the chamber. This allows the build space to reach up to 60 °C and heat up faster. This reduces warping on large components.
The extruder uses a high-flow Bondtech CHT nozzle (0.4 mm) and a wear-resistant secondary nozzle included in the scope of delivery. Direct drive, 10:1 gear ratio, 360-degree component cooling, and 0.9-degree stepper with TMC2130 drivers address throughput and surface appearance. Input shaper and phase stepping are activated ex works. Automatic first layer is performed via a load cell sensor; mesh leveling detects the print area.
The electronics are based on the 32-bit xBuddy board with STM32. A power management system analyzes the mains voltage and switches the heating bed in series or parallel depending on 110/230 V. A multi-stage AC safety concept monitors fault currents in a similar way to an RCD and, in case of doubt, disconnects redundantly via relays and TRIAC. Connectivity is optional: Ethernet, removable Wi-Fi module, camera (1080p), and Prusa Connect are available, and completely offline operation is possible. For government agencies and businesses, Prusa offers a “Critical Infrastructure Edition” without a wireless module and with optional encrypted USB storage.
In terms of materials, the printer is geared towards PLA, PETG, and TPU; the heated chamber is clearly aimed at ABS, ASA, PA, and PC. A HEPA filter can be retrofitted. Prusa also announces NFC-enabled Prusament spools based on the open “Open Print Tag” standard, as well as matching spool holders. An MMU3 option for up to five colors/materials is scheduled to follow in early 2026.
The CORE One L is delivered pre-assembled and includes an online course. The price is €1,699 (€1,415.83 net). Shipping starts on November 7.
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