For an enclosed chamber from Prusa
Prusa Research CORE One+
An enclosed CoreXY FDM printer with active chamber heating up to 55°C and a 250 × 220 × 270 mm build volume: the current (Gen 2) CORE One+ from Prusa Research.
In short The Prusa CORE One+ is an enclosed filament (FDM) 3D printer with a 250 × 220 × 270 mm (9.8 × 8.7 × 10.6 in) build volume. Prusa Research claims a 290 °C (554 °F) nozzle and active chamber heating to 55 °C (131 °F); the printer measures 415 × 444 × 555 mm (16.3 × 17.5 × 21.9 in) and weighs 22.5 kg (49.6 lb).
Documentary analysis · Not personally tested
FDM · EnclosedWhy consider it?
An enclosed chamber with active heating (55°C), fully automatic first-layer leveling via a load-cell sensor, a Quick-Swap nozzle system, and a 3.5-inch touchscreen; the Gen 2 revision adds GT1.5 belts and a built-in nozzle wiper.
What to verify
MMU3 or INDX multicolor remains a separate add-on, as does the HEPA filtration needed for ABS and ASA; the internal camera is also optional, not standard equipment.
Prusa CORE One+ specifications
- Technology
- Filament (FDM)
- Build volume
- 250 × 220 × 270 mm (9.8 × 8.7 × 10.6 in)
- Printer dimensions
- 415 × 444 × 555 mm (16.3 × 17.5 × 21.9 in)
- Weight
- 22.5 kg (49.6 lb)
- Enclosure
- Enclosed, active heating up to 55 °C (131 °F)
- Max nozzle temperature
- 290 °C (554 °F)
- Max bed temperature
- 120 °C (248 °F)
- Multicolor
- Optional MMU3 (5 materials) or INDX (up to 8 materials), both sold separately; no stock multicolor system on the base machine.
- Materials
- PLA, PETG, Flex, PVA, PC, PP, CPE, and PVB in standard configuration; ABS, ASA, HIPS, and PA with the optional HEPA filtration module per Prusa Research.
- Screen
- 3.5-inch touchscreen
- Connectivity
- Wi-Fi, Ethernet, USB
- Listed features
- Auto bed leveling, filament runout sensor
How much space does it need?
The Prusa CORE One+ measures 415 × 444 × 555 mm (16.3 × 17.5 × 21.9 in) for a 250 × 220 × 270 mm (9.8 × 8.7 × 10.6 in) build volume: the dashed box is the printer, the solid cube the largest theoretical part, about 15% of the machine’s volume. Add room for the spool or multicolor unit, cables and ventilation.
Source: official Prusa Research pages (prusa3d.com), checked September 28, 2026. Manufacturer claims, not our measurements. Build volume is nominal: orientation, supports and reserved zones can reduce the usable space.
Compare the Prusa CORE One+
Which projects is it for?
The CORE One+ (Gen 2) is the current version of the CORE One at Prusa Research: the same product page that used to list the CORE One now shows this model, with a build volume of 250 × 220 × 270 mm, an enclosed chamber, and active heating up to 55°C. It targets technical parts that benefit from a stable ambient temperature without a separate accessory.
This second generation keeps the same footprint: Prusa Research lists new GT1.5 belts for a cleaner surface finish, a built-in nozzle wiper, a redesigned heatbed mount that speeds up print preparation, and a snap-on top panel that's easier to remove for maintenance.
Materials and setup
Prusa Research lists a hotend up to 290°C, extendable to 400°C with the optional HT hotend, and a heatbed up to 120°C. In standard configuration the printer runs PLA, PETG, Flex, PVA, PC, PP, CPE, and PVB; ABS, ASA, HIPS, and PA need the optional HEPA filtration module per the manufacturer's listing.
First-layer leveling and calibration are fully automatic thanks to a load-cell sensor, with a built-in accelerometer for input shaping. Multicolor isn't native: the MMU3 (5 materials) or the INDX system (up to 8 materials) are added separately depending on what you need.
What the bundle includes or not
Per Prusa Research, the assembled version includes the pre-built printer, a 1kg Prusament PLA filament sample, a PEI sheet, the starter handbook, a USB drive with sample prints, and maintenance consumables; a self-build kit version is also offered.
The internal camera Prusa Research lists is an optional in-chamber add-on, not standard equipment, just like the HEPA filtration module, MMU3, INDX, and the HT hotend. 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. For nearly double the volume with a chamber heated to 60°C, the CORE One L+ shares the same CORE One platform, while the XL+ targets an even larger volume with a tool changer.
The multicolor buying guide helps compare the MMU3 and INDX options before choosing.
Similar printers to compare
Sources and limits
- Source: official Prusa Research pages (prusa3d.com), checked September 28, 2026. Manufacturer claims, not our measurements.
- How we assess specifications
We have not measured noise, real printing speed, accuracy or reliability, so none of these is rated here.