Prusa CORE One to CORE One+ upgrade

The official upgrade kit from Prusa CORE One to CORE One+ is designed for owners of the original CORE One printer who want to take advantage of all the innovations of the CORE One+ model without the need to buy a new printer. The package contains all the necessary original parts to rebuild your existing CORE One into a full-fledged Prusa CORE One+.

What is new with CORE One+

The new generation Prusa CORE One+ combines:

• all firmware adjustments and optimizations developed during the entire lifespan of CORE One,
• hardware improvements taken from the larger CORE One L,
• emphasis on higher print quality, quieter and smoother operation, and a "set-and-forget" user experience.

Key innovations compared to CORE One

• Automatic top vent control (Top Vent) – the extruder itself opens the vent for low-temperature materials (PLA, PETG) and closes it for materials with higher temperatures (ABS, PCCF, Nylon, etc.) to maintain optimal thermal conditions in the chamber.
• Easy Flex Loading – the redesigned filament loading point significantly facilitates work with flexible materials, which were previously difficult to push through the PTFE guide.
• New bayonet spool holder – the modular holder allows the use of various spool sizes, including large 2 kg spools, and is ready for direct connection to a dry box (drybox).
• Improved firmware and smoother operation – includes all existing updates for CORE One: better surface quality, reduction of VFAs, more reliable and quieter printing.

What the upgrade kit contains

The CORE One → CORE One+ upgrade kit contains everything needed for the conversion:

• CORE One+ printed parts (official original parts from Prusa Research)
• New covers and parts for Nextruder and top panel – including the arm with the mechanism for automatic vent opening
• New side filament sensor parts – body, cover, lever, and switch to replace the original sensor (again using original non-printed parts)
• New bayonet spool holder – universal base (puck), holder body, and rubber O-ring
• CORE One+ stickers and markings – for clear identification that your printer is now a CORE One+
• Fasteners and small accessories needed for assembly

The upgrade is supplied as a kit, assembly is performed by yourself according to the official Prusa Research manual.

Advantages of the upgrade for everyday printing

• Less user intervention – automatic ventilation vent control eliminates the need for manual adjustment according to material type.
• Easier work with flex materials – Easy Flex Loading significantly streamlines the loading of TPU and other flexible filaments.
• Better material workflow – the new spool holder is ready for direct drybox connection, so you have control over filament humidity.
• More consistent print quality – the combination of improved firmware and hardware brings cleaner surfaces and overall more reliable printing.

Compatibility and requirements

• Exclusively intended for Prusa CORE One (original version without "+")
• For proper function of the automatic vent, it is necessary to update the printer firmware to the current version recommended by Prusa Research (e.g., 6.4.0 or newer)
• The upgrade does not require the purchase of a new printer – it uses existing CORE One components (frame, electronics, most mechanics)

Who is the upgrade suitable for

The CORE One to CORE One+ upgrade will be especially appreciated by:

• professional users and companies that want to increase reliability and automation during all-day printing,
• operators of smaller print farms where it is desirable to minimize manual operator intervention,
• 3D printing enthusiasts who want to have their CORE One at the level of the latest generation, including readiness for future expansions (e.g., INDX multi‑material upgrade).

Installation and support

• An official assembly guide (handbook) with detailed images and step-by-step procedures is available.
• With the correct procedure, it is possible to manage the conversion in home or office conditions using only common tools.
• After completion, you have a fully functional Prusa CORE One+ with all its advantages.

Summary

The Prusa CORE One to CORE One+ upgrade is the ideal solution for anyone who owns the original CORE One and does not want to buy a new machine, but still desires all the features of the CORE One+ model. You will get a modernized printer with significantly better operating comfort, ready for demanding applications, flexible materials, and future expansions such as INDX multi-material systems.

Key features:

• Official upgrade kit directly from Prusa Research for converting CORE One to CORE One+
• Includes all key CORE One+ innovations, including automatic top vent control and Easy Flex Loading
• New bayonet spool holder ready for direct filament drybox connection
• All CORE One firmware improvements integrated for better print quality and smoother operation
• Supplied as a complete kit with all necessary printed parts and accessories
• Ideal for professional operations, print farms, and demanding hobby users who want to extend the life and value of their CORE One investment