Original Prusa® CORE One L

CORE One - Doubled!

Huge print volume, active heat circulation, and more!

The CORE One L is much more than just a larger CORE One. We didn't just scale it up; we took everything that worked great and added features for effortless large-format printing.

For the body, we have chosen an effective combination of a solid steel frame and aluminum panels to create a lightened version of our proven exoskeleton design. And the results are compelling: the machine’s outside dimensions are only 10% larger than the CORE One, yet it maintains the same weight, and the print volume is doubled!

New AC Heatbed with Convection Heating

No cold corners, fast heat up

The new massive AC heatbed is made of a thick block of aluminum for the best possible heat distribution. This results in perfectly uniform heat distribution from edge to edge - no cold spots, no cold corners. You can place your model anywhere in the print area without worrying about lifted corners or warping. Two fans on the underside of the heatbed create a convection effect - they bring cold air in and blast it across the massive heated surface to quickly bring the chamber all the way up to 60 °C.

Flawless Precision

What You Design is What You Get

You can be sure that with our internally developed, quality-focused print profiles, your models will turn out exactly how they were designed, with perfect dimensional accuracy as proven by CT scans. CORE One L utilizes the proven Nextruder with 360° cooling for flawless printing of 75° overhangs, saving both time and material.

Maximum Speed without a Catch

Fast with every filament, not just specialized ones

Don’t limit your projects to a small selection of specialized “high-speed” filaments. Use any PLA, PETG, or many advanced materials. The CORE One series represents our fastest printers yet: robust CoreXY kinematics, high-flow nozzle, Input Shaper, factory-tuned print profiles for 200+ filaments - it’s all there. However, we never sacrifice print quality to chase speed records. The prints are always solid, durable, and won’t crumble in your hand.

A Proper FLEX!

New option for inserting flexible filaments

The side filament sensor can be toggled to flexible filament loading mode using a physical switch - this disables the filament sensor and opens a wider, less restrictive way for flexible materials. However, a second filament sensor in the print head still monitors the filament runout.

All-in-One Package

Get the Best Performance Right out of the Box

The CORE One L is equipped with an accelerometer, and the firmware comes with a built-in wizard for setting optimal belt tension. The printer comes pre-calibrated from the factory, but in case you want to ensure you’re getting a 100% performance after carrying out a larger maintenance, you can always recalibrate everything easily from the menu. The printer comes with two nozzles (high-flow and abrasive-resistant) to cover every filament.

Designed for Offline Use

100% Privacy: Offline Mode without Compromise

You don’t have to connect the CORE One L to the network - not even once. And you can still enjoy the full experience without any drawbacks. The printer can be configured and operated offline, including slicing and installation of firmware updates. The Wi-Fi module can be easily unplugged for environments with the highest level of security. Simply release a single screw on the back of the printer and pull the Wi-Fi module out.

Top security industries, highest-clearance manufacturing, companies working with sensitive data, government agencies, and many others will appreciate the comfort of knowing that the printer will not share a single byte of data with any cloud infrastructure, and still deliver the best possible performance.

We now also offer a special bundle for Critical Infrastructure. It’s the same performance as the CORE One L; however, its mainboard has no Wi-Fi circuitry at all, the printer comes without the camera, and there is a certified, encrypted USB drive in the package.

The CORE One L is a larger sibling of the Prusa CORE One, which marked a significant leap forward in the CoreXY market. TechRadar calls it “by far the most advanced and functional printer of this type on the market at present.” Recognized for its excellent build and professional-grade features, it delivers consistently reliable performance with top speed, accuracy, and versatility - earning it the title of “Best Enclosed 3D Printer of 2025” by All3DP. With a Red Dot Award to its name, it also proves that functionality can go hand-in-hand with standout design.

Create colorful 3D objects!

The CORE One L is compatible with the MMU3, the add-on for the fastest single-nozzle printing with up to five filaments at the same time. You can create beautiful, colorful objects, and you won’t have to throw half of your filaments away or constantly clean the surroundings of your printer. Our solution uses an innovative retraction technique and a compact wipe tower to manage filament changes. This not only reduces the wasted filament but also deposits all the waste to a single, tidy block. MMU3 for the CORE One L will be released in early 2026.