Source: All3DP

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Say Hello to the Core One L, Prusa’s Bigger, Better CoreXY 3D Printer

by Matthew Mensley
Published Oct 31, 2025

Available today, Prusa’s new Core One L grows the build volume and makes some quality of life adjustments to the year-old Core One 3D printer.

Bigger isn’t always better, but in this case, well, yeah. It might be. At Prusa’s spacey Prusa Day event held at the Prague Planetarium, the company introduced a new, bigger Core One: the Core One L.

The new printer performs geometrical gymnastics and then some, with a print volume of 300 x 300 x 330 mm, doubling that of the Core One, while only increasing the printer’s footprint and overall size by 10%. And this while weighing the same as the original Core One, thanks to a switch to aluminum bodywork surrounding the printer’s robust “exoskeleton”.

The Core One L costs $1,799, with the increase in size, chamber performance, and minor quality of life adjustments setting it apart from the now year-old Core One.

The Prusa Core One L, with a 300 x 300 x 330 mm build volume yet barely larger than the Core One (Source: All3DP)

Core performance specifications remain largely the same, with Prusa’s Nextruder and heatbreak-integrated nozzles remaining and heating to 290°C, alongside the vented chamber and chamber heating. Unlike the Core One, the Core One L has a new party trick with a convection heating system, an inclusion made possible by a new bed type.

The new, thick aluminum print bed carriage, which has a delightful shuttle re-entry tile look about it that matches the actual space shuttle it shared a planetarium with for the press reveal, is tailormade to tackle quick uniform heat distribution. Not only that, it features two dedicated air recirculation fans, which the company says achieves a convection like action that lets the Core One L chamber get up to its new top temperature of 60°C quickly. The company says a strong new magnet layout here, paired with the company’s characteristically thick print beds, means no risk of material warp pulling the bed free.

The bed is quick-heating and AC-powered, with heavy-duty shielded cabling debuting that you could “slash with a knife” claimed an animated Josef Průša during the presentation.

The new heavy duty cast aluminum print bed offers improvements to heat performance, says the company (Source: All3DP)

Quality of life changes include the printer’s adjustable grill now opening and closing automatically thanks to a redesign that uses the printhead to move a slider to open and close the vent – a pragmatic solution to something the Core One left to the user and their (our) forgetfulness.

An improved webcam as standard includes a night mode for in-the-dark monitoring without the use of eye-splitting LEDs, too. Also new is a TPU “switch”, which reduces the tension of the filament sensor, making it easy to load flexibles through the Core One L’s filament guide tubing.

The printer Core One L ships virtually ready-to-run, Prusa says, requiring you only mount the display front plate and plug the printer in. Factory calibrated, it skips the typical calibration routine that most printers require on first start up.

The Core One L builds directly on the Core One before it, with mostly the same specs but a bigger build volume and a handful of quality-of-life upgrades (Source: All3DP)

As with the Core One before it, the Core One L is compatible with the MMU3 in its various forms. Given the space it affords and the styling, we assume the Core One L will also form the base printer for the company’s teased filament switching solution that we expect to see debut at Formnext.

Pulling on the thread of security and network integrity, and the expectation that Core One Ls will join Core Ones and other printers from the company in institutions and agencies with critical security requirements, Prusa also announced that there is an alternate version of the Core One L called the Critical Infrastructure Edition (CIE). Costing the same as the regular Core One L, but with all networking components physically stripped out of the machine, the only means to transfer and initiate a print is via encrypted, coded USB dongle. It’s a hard security-minded offering that nods to these kinds of printers’ increasing usage in sensitive companies and projects.

Close up on the Core One L printhead (Source: All3DP)

At $1,799, the Core One L is not cheap, and comparisons will surely be drawn to the Bambu Lab H2S, which offers a marginally larger build volume for a few hundred bucks less. The Core One L appears to prove however, that there’s plenty of juice for Prusa to squeeze out of this still-new form for them.

Core One owners may be a little disappointed to learn that there are no imminent plans to bring any of the L’s new features to the Core One, though.

The Prusa Core One L is available to order today, with shipping expected to begin around November 7, 2025. We’ll be going hands-on soon.

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About the Author:

Matthew Mensley

Matthew Mensley is a senior editor at All3DP with nine years covering consumer 3D printing hardware. He writes news, reviews, and buying guides with the clarity of someone who's seen enough hype cycles to know which ones to take seriously.

License: The text of "Say Hello to the Core One L, Prusa’s Bigger, Better CoreXY 3D Printer" by All3DP is licensed under a Creative Commons Attribution 4.0 International License.