CORE One+ (Gen 2) Ultimate Edition Assembly kit

Build Your Own 3D Printer

With the CORE One+ Kit, you'll get the unique opportunity to assemble a powerful CoreXY 3D printer all by yourself! It's a rewarding weekend build with beginner-friendly instructions. Follow the footsteps of thousands of enthusiasts who picked the kit to start their 3D printing journey and get to know your machine inside out.

Whether you're new to 3D printing or a seasoned expert, Prusa CORE One+ ticks all the boxes for a reliable all-around machine. Featuring an enclosed chamber and CoreXY design, it combines high-speed printing and maximum print quality with a large 250×220×270mm print area. And there are plenty of clever design choices, e.g., an all-steel exoskeleton frame for maximum firmness and robustness. You’ll be ready to print your first model in minutes thanks to intuitive software and one-click printing. And with nearly one million 3D models at Printables.com, you will always have something awesome to print!

The CORE One+ is a 3D printing workhorse engineered in the proven Prusa tradition. Designed with a "made to last" philosophy and made from premium materials, the CORE One+ offers exceptional reliability with minimal maintenance. The enclosed chamber, capable of reaching up to 55 °C, features active temperature control for high-quality printing across a wide range of materials from PLA and PETG (even with the door closed) to more demanding materials like ASA, PC, or Nylon.

Read the announcement article on our blog.

Ultimate Edition includes:

What's New in the CORE One+

CORE One+ updates the original platform with practical hardware changes adopted from CORE One L and the accumulated CORE One firmware improvements.

This combination delivers the best print quality, smoother operation, and a more autonomous, hassle-free user experience.

Key features:

• Automatic Top Vent Operation: The extruder now automatically opens the vent for low-temp materials (PLA/PETG) and closes it for high-temperature materials, ensuring the optimal thermal environment and creating a true "set-and-forget" experience.
• Easy Flex Loading: A redesigned filament insertion point makes the process of feeding flexible filaments quick and simple.
• New Bayonet-Style Spoolholder: Allows you to use various spool sizes. Ready for a direct-feed drybox.
• Firmware & Performance: Includes all software updates from the entire lifespan of the CORE One, resulting in even better print quality and smoother operation right out of the box.

Start Printing Now, Upgrade to INDX Later

Get your CORE One+ and start printing right away. When you're ready for more, the INDX upgrade installs easily onto your printer.

The INDX upgrade is a revolutionary toolchanging system developed in collaboration with Bondtech. It lets you combine up to 8 different colors or materials in a single print, automatically switching between them in seconds with near-zero waste.

Multi-material printing has traditionally meant long tool changes, wasted filament, and constant tweaking to get different materials to play nice. INDX eliminates all of that. Its contactless magnetic induction heating means near-instant tool changes with no oozing or stringing between swaps, and the self-adjusting Dynamic Extruder automatically dials in the right tension for every filament. The INDX is not available for purchase yet, but it's coming soon. Sign up for updates so you don't miss it.

HT Hotend Upgrade: Print at 400 °C

A High Temp Hotend Upgrade is offered for compatible CORE One, CORE One+ and CORE One L configurations. It is a separate upgrade, so check what is included with the selected machine.

This simple, quick-swap upgrade installs in less than a minute and unlocks the ability to print at 400 °C, allowing you to:

• Unlock New High-Performance Polymers: Print with industrial-grade materials like PEKK-CF, PPS-CF, PPSU, PPA, and PPA-CF, known for their exceptional temperature and chemical resistance.
• Boost Existing Part Strength: Achieve stronger layer adhesion and produce up to 30% sturdier parts from existing filaments such as ASA, PA11CF, PCCF, or even PETG.
• Meet Industry Standards: This upgrade allows you to print parts that meet rigorous certifications (like AS9100 or ISO 10993) for critical, long-term applications.
• Expand Your Possibilities: With the HT Hotend Upgrade, your printer becomes an even more versatile machine for various industries, including R&D, automotive, aerospace, and medicine.

Flawless Precision

Outstanding print quality thanks to the Nextruder

The upgraded Nextruder combines force sensing with cooling around the printed part. Prusa reports support-free overhangs up to 75° in suitable conditions. Geometry, material and profile selection affect the result; add supports where your part requires them.

Maximum Speed without a catch

The CORE One+ is fast with every filament, not just specialized ones

CORE One+ combines CoreXY motion, a high-flow nozzle and Input Shaper with Prusa's material profiles. Choose the profile for the actual filament rather than assuming a high-speed label alone determines compatibility or quality.

Compact Footprint, Large Volume

The perfect fit for any home, workplace or print farm

Prusa states that CORE One+ occupies 50% less space than an enclosed MK4S while offering 30% more build volume. Use the dimensions in the technical sheet to plan your own workspace and clearance around the printer.

The Best Solution for Advanced Materials

Print durable functional models easily and without warping!

The chamber is as compact as possible, with a cleverly designed recess on each side to minimize its volume. This allows the chamber to quickly reach higher temperatures (up to 55°C), enabling you to print ASA, ABS, PC, PA (Nylons), and other advanced materials smoothly, without warping. The automatic ventilation system and active temperature control enable flawless printing of PLA - even with the door completely closed!

Robust Steel Exoskeleton

A design that works and looks the Part

The enclosure forms part of the CORE One+ steel structure, supporting stability while remaining accessible for servicing. Mechanical fasteners allow worn components to be replaced with standard tools. Spare parts can be checked through Fabinity's accessories range.