For an enclosed chamber from Prusa

Prusa Research Prusa CORE One

An enclosed CoreXY FDM printer with active chamber heating up to 55°C and a 250 × 220 × 270 mm build volume per Prusa Research.

Filament (FDM)250 × 220 × 270 mmEnclosed

Documentary analysis · Not personally tested

See the manufacturer and sellers

No reusable manufacturer image: nominal build volume 250 × 220 × 270 mm shown to scale.

Specification sources reviewed 2026-09-12. These are manufacturer claims, not measurements by Find My 3D Printer.

Why consider it?

An enclosed chamber with active heating and automatic ventilation, a first for Prusa Research aimed at stabilizing technical materials.

What to verify

MMU3 or INDX multicolor remains a separate add-on: check precisely whether a listing includes either system.

The specifications that matter

Process: FDM
Nominal build volume: 250 × 220 × 270 mm
Enclosure: Enclosed
Multicolor: Optional MMU3 (5 materials) or INDX (8 materials), both sold separately.
Materials: PLA, PETG, Flex, PVA, PC, PP, CPE, and PVB in standard configuration; ABS, ASA, HIPS, and PA are easier thanks to the heated chamber.

Allow room for supports and the chosen orientation. Confirm the exact nozzle, feeder, included accessories and installation clearance against the manual and seller’s listing.

Which projects is it for?

The CORE One is an enclosed CoreXY FDM printer with a build volume of 250 × 220 × 270 mm per Prusa Research, featuring active chamber heating up to 55°C and automatic ventilation. It targets technical parts that benefit from a stable ambient temperature without relying on a separate accessory.

The steel exoskeleton and CoreXY architecture also aim for speed and rigidity, printing faster than the MK4S lineup while staying within the Prusa ecosystem (PrusaSlicer profiles, Prusa Connect).

Materials and setup

Prusa Research lists PLA, PETG, Flex, PVA, PC, PP, CPE, and PVB in standard configuration, with a hotend up to 290°C (400°C with the optional HT hotend) and a heatbed up to 120°C. The heated chamber makes ABS, ASA, HIPS, and PA easier, since these need more thermal stability.

Multicolor isn't native on the base machine: the MMU3 (up to 5 materials) or the INDX system (up to 8 materials) are added separately depending on the complexity you need.

What the bundle includes or not

Per Prusa Research's listing, the assembled version includes the pre-built printer, a Prusament PLA filament sample, a smooth PEI sheet, the starter handbook, a USB drive with sample prints, and maintenance consumables.

MMU3, INDX, and the HT hotend remain separate add-ons, each priced on its own. Before buying, check precisely what a listing includes rather than relying on the product photo alone.

Alternatives to compare

For a less expensive open frame at a similar footprint, the MK4S is the direct comparison at Prusa Research. The Prusa Research page places the CORE One within the rest of the lineup, including the XL for a larger volume.

The beginner's buying guide helps weigh the CORE One against a simpler open machine versus a more materials-flexible enclosed one.

Frequently asked questions

Does the CORE One have an enclosed chamber?

Yes, per Prusa Research it's an enclosed chamber with active heating up to 55°C, a first for the brand's historical MK lineup.

Is the MMU3 included with the CORE One?

No, it's a separate add-on, as is the 8-material INDX system. The base machine runs one material or color at a time.

Is the CORE One suited to ABS and ASA?

That's one of the intended uses for the actively heated chamber, which stabilizes these materials better than the MK4S's open frame per the manufacturer's listing.

Sources and limits

We have not measured noise, real printing speed, accuracy or reliability. Manufacturer images do not establish the contents of the selected bundle.