Prusa Research

Prusa Research CORE One L+

FDM filament printer. Build volume: 300 × 300 × 330 mm.

Assessed from documentation Updated on October 4, 2026

How to recognize it: Check the full model name “CORE One L+” on the label or in device information. Suffixes and revisions identify different models; check the source before selecting parts.

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Technical specifications

Manufacturer specifications for the listed configuration. Notes identify accessories, measurement conditions and calculated values.

Technology and structure2

Technology	FDM
Build area shape	Rectangular

Build area and volume4

Build area X	300 mm
Build area Y	300 mm
Build area Z	330 mm
Build volume	29.7 L Calculated from nominal X × Y × Z dimensions.

Hardware7

Enclosed as standard	Yes
Installed toolheads / extruders	1
Extruder type	Direct drive
Filament diameter	1.75 mm
Standard nozzle	0.4 mm
Nozzle material	Brass high-flow
Build plate	Double-sided removable PEI spring steel

Temperatures4

Maximum hotend temperature	290 °C
Maximum bed temperature	120 °C
Chamber heating	Active
Maximum chamber temperature	60 °C

Resolution2

Minimum layer thickness	0.05 mm
Maximum layer thickness	0.3 mm

Features2

Automatic leveling	Yes
Filament runout sensor	Yes

Connectivity2

Connectivity	Ethernet, NFC, Wi-Fi
Listed slicers	PrusaSlicer

Dimensions and weight4

Machine width	469 mm
Machine depth	521 mm
Machine height	635 mm
Net weight	21.9 kg

Technical sources: CORE One L+ — documentazione ufficiale

Undocumented specifications (25)

Kinematics: Not documented
Shared dual-nozzle area X: Not documented
Shared dual-nozzle area Y: Not documented
Shared dual-nozzle area Z: Not documented
Available nozzle diameters: Not documented
Advertised maximum print speed: Not documented
Advertised typical print speed: Not documented
Maximum travel speed: Not documented
Maximum acceleration: Not documented
Maximum volumetric flow: Not documented
Multicolor system: Not documented
Colors with documented configuration: Not documented
Power loss recovery: Not documented
Camera: Not documented
Air filtration: Not documented
Control display diagonal: Not documented
Control display: Not documented
Firmware: Not documented
Internal storage: Not documented
Manufacturer-listed materials: Not documented
Rated power: Not documented
Power supply: Not documented
Advertised noise: Not documented
Leveling method: Not documented
Advertised Z accuracy: Not documented

Accessories with verified compatibility

Accessory	Printer variant	Status
eSUN eBOX Pro filament dryer eBOX Pro	CORE One L+	Compatibility declared by the seller Verified on October 12, 2026 1.75 mm filament documented by the printer manufacturer; the dryer does not connect to the printer. No hands-on test.
eSUN vacuum storage bag kit for filament eSUN Storage Bag Kit	CORE One L+	Compatibility declared by the seller Verified on October 12, 2026 1.75 mm filament documented by the printer manufacturer; the accessory does not connect to the printer. No hands-on test.
SUNLU S2 filament dryer SUNLU S2	CORE One L+	Compatibility declared by the seller Verified on October 12, 2026 1.75 mm filament documented by the printer manufacturer; the accessory does not connect to the printer. No hands-on test.
SUNLU S4 four-spool filament dryer SUNLU S4	CORE One L+	Compatibility declared by the seller Verified on October 12, 2026 1.75 mm filament documented by the printer manufacturer; the accessory does not connect to the printer. No hands-on test.

Related guides

General guides help identify print defects. Follow the manual for your exact model and variant for disassembly, maintenance and calibration.

First layer not sticking: causes and checks
How to recognise a first layer that is too high, too squished or uneven and fix it in order: plate cleaning, slicer profile, leveling, Z offset. Based on official guidance from Bambu Lab, Prusa, Creality, Elegoo and Anycubic.
Warping: corners lifting off the bed with ABS, ASA, PETG and PLA
Why corners curl and how to reduce it: plate cleaning, drafts, enclosure, bed temperature, brim and ears, cooling and glue. Based on official guidance from Bambu Lab and Prusa and on user experience.
Clogged nozzle and under-extrusion: find where the blockage is and fix it
How to tell a blockage in the PTFE tube, the extruder or the hotend apart, when to use the needle and cold pull, how to recognise heat creep, and when replacing the nozzle, PTFE tube or gears is actually justified.
Wet filament: recognise it, dry it and store it
Symptoms of filament that has absorbed moisture, the most sensitive materials, how to dry following Bambu Lab and Prusa official tables without damaging spool or filament, and how to keep it dry.
Stringing and oozing: how to get rid of filament strings and blobs
How to recognise stringing and oozing, the main causes (wet filament, temperature, retraction, travel moves, nozzle) and the checks to do in order, with official guidance from Prusa, Bambu Lab, Creality and Elegoo.
Layer shifting: causes and checks in order
Why layers shift along X or Y and how to find the cause: obstructions, collisions with curled parts, belts, pulleys, speed, electronics cooling and motors, with official guidance from Prusa, Bambu Lab, Creality, Elegoo and Anycubic.
Ringing and ghosting: getting rid of ripples on FDM print walls
What ringing (or ghosting) is, why it appears after corners and lettering, and how to fix it in order: printer surface, loose parts, belts, lubrication, vibration calibration (input shaping), speed and acceleration.

Dates and news

August 13, 2026

Release Prusa Research

Prusa refreshes its lineup: CORE One+ Gen 2, CORE One L+ and XL+

Prusa Research introduced the CORE One+ (Gen 2), CORE One L+ and XL+ with GT1.5 belts, an integrated nozzle wiper and improved cooling, at unchanged prices. Assembled CORE One+ Gen 2 and CORE One L+ shipped immediately, the XL+ from late August; upgrade kits are planned for owners.

Affected printers: Prusa Research CORE One+ Gen2, Prusa Research CORE One L+, Prusa Research Original Prusa XL+

Sources: Better prints, easier use: Prusa XL, CORE One L and CORE One Gen 2 – our big product update (Prusa Research)

Full calendar →

Official documentation

Manuals and guides published by Prusa Research. Links go to the manufacturer’s site; we consulted them on the date shown.

Support page

CORE One L / L+ — support hub (Knowledge Base) — English, accessed on October 5, 2026

User manual

CORE One L — user manual (3D Printing Handbook v1.0) — English, accessed on October 5, 2026

Maintenance

CORE One+ Gen2, CORE One L+ — belt tension adjustment — English, accessed on October 5, 2026
CORE One L/L+ — periodic maintenance — English, accessed on October 5, 2026

Troubleshooting

CORE One L/L+ — troubleshooting and error codes index — English, accessed on October 5, 2026
CORE One L/L+ — underextrusion (Nextruder printers) — English, accessed on October 5, 2026

Parts replacement

CORE One L/L+ — index of usage and spare parts replacement guides — English, accessed on October 5, 2026
CORE One L/L+ — Prusa Nozzle replacement — English, accessed on October 5, 2026
CORE One L/L+ — hotend assembly replacement — English, accessed on October 5, 2026
CORE One L+, MK3.9, XL — Nextruder hotend change or replacement (overview) — English, accessed on October 5, 2026
CORE One L/L+ — print fan replacement — English, accessed on October 5, 2026

Firmware and software

Prusa Research, 8 models — how to update the firmware — English, accessed on October 5, 2026
CORE One L/L+ — firmware and downloads — English, accessed on October 5, 2026

Technical specifications

Official documentation — English, accessed on October 5, 2026
CORE One L → L+ — upgrade kit (variant identification) — English, accessed on October 5, 2026

Sources

CORE One L+ — official documentation — Prusa Research, accessed on October 5, 2026