Prusa CORE One+ (Gen 2): problems, parts and running costs
Checked: 2026-10-10
Summary
Owners report a small set of problems with the Prusa CORE One+ (Gen 2), mostly kit-assembly alignment and the machine’s self-test. Filament is the main recurring cost and no yearly figure for the whole machine is published. At $1,202.78 assembled or $925 as a kit from Prusa’s US store (October 2026), it is a fair buy if you want the enclosed heated chamber and can accept the thin independent-test evidence.
Common problems and fixes
- Kit linear-rail misalignment — one Gen 2 kit owner could not align the linear-rail mounts so they sat truly opposite each other, leaving about 8 mm of error once the crossbeam was fitted; disassembling and reassembling did not fix it, and it is unclear whether a part is defective or the assembly went wrong. Single report, not a general fault. [3]
- Selftest failure — Prusa publishes a dedicated “Selftest failed (CORE One/+)” troubleshooting article, so this fault is common enough to document; the fix steps are in the knowledge base. [2]
- Clogged nozzle — covered by a Prusa knowledge-base article for the CORE One family. [2]
- Belt tension — covered by a Prusa knowledge-base article for the CORE One family. [2]
- Squeaky gearbox noise — reported on the CORE One L, a different model, and did not reproduce under manual axis movement; a forum member suggested removing the Nextruder front cover and greasing the gearbox. File it as a pattern to watch, not a confirmed fault of the Gen 2. [4]
Parts and consumables
- Filament — recurring cost, Prusament or third-party; no yearly figure published. [1]
- HT Hotend upgrade — raises the nozzle limit to 400 C; separate purchase. [1]
- INDX Toolchanger — optional multi-material accessory, not included. [1]
- Camera — optional accessory, not included. [1]
- Advanced filtration — optional accessory, not included. [1]
- Additional print sheets — optional accessory, not included. [1]
- Spare parts — Prusa sells spare parts for the CORE One family through its store. [1]
Yearly running cost
Not enough data. The only recurring cost the sources name is filament, and no yearly spend for the whole machine is published. [1]
When it is a good buy
Prusa’s US store lists the assembled unit at $1,202.78 and the kit at $925 (October 2026). The kit is the better buy if you are willing to build; the assembled unit is the better buy if you want to start printing without the assembly work. No alternative models are named in the sources.