Split a model that is too big for the Prusa CORE One
The Prusa CORE One prints up to 250 × 220 × 270 mm. SplitSTL splits your model into parts that fit, with pins or magnets, engraved part numbers and 3MF plates ready to slice.
Build volume of the Prusa CORE One
Build plate 250 × 220 mm, height 270 mm. Keeping a 5 mm margin, each part must fit in 245 × 215 × 265 mm. Parts can be turned on the plate, so SplitSTL also picks the orientation: a long, flat object can reach about 315 mm along the diagonal.
Your model
Enter your model’s size to estimate the number of parts.
How many parts for your projects?
Minimum number of parts with a grid split, each part oriented to fit the plate (5 mm margin).
| Object | Size | Parts |
|---|---|---|
| Cosplay helmet | 240 × 280 × 300 mm | 4 |
| 50 cm vase | 250 × 250 × 500 mm | 6 |
| Life-size bust | 450 × 300 × 600 mm | 12 |
| 1 m statue | 400 × 350 × 1,000 mm | 16 |
| 1 m sword | 1,000 × 220 × 40 mm | 4 |
| 80 cm wall sign | 800 × 500 × 15 mm | 8 |
Tips for the CORE One
- Keep a 5 mm margin: the skirt, brim and nozzle wipe need room.
- For parts you want to take apart, use magnets (6 × 3 mm is a good standard); for a permanent build, 5 mm pins and glue.
- Print the fit-test coupon included in the export first to tune how tight the pins are.
- Lay each part on its cut face: it is the largest flat surface, so adhesion is better and fewer supports are needed.
The same helmet on other printers
- Bambu Lab A1 mini · 180 × 180 × 180 mm · 8
- Original Prusa MK4S · 250 × 210 × 220 mm · 4
- Sovol SV06 · 220 × 220 × 250 mm · 4
- Bambu Lab A1 · 256 × 256 × 256 mm · 4
- Elegoo Centauri Carbon · 256 × 256 × 256 mm · 4
- Voron 2.4 (350) · 350 × 350 × 340 mm · 1
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Frequently asked questions
What is the maximum print size of the Prusa CORE One?
The build volume of the Prusa CORE One is 250 × 220 × 270 mm. Anything bigger has to be scaled down or split into several parts.
How many parts for a cosplay helmet on the CORE One?
A helmet of about 24 × 28 × 30 cm needs at least 4 parts on the CORE One with a grid split. The natural-joint split of SplitSTL Pro can follow the helmet’s design lines instead.
How do I join the printed parts?
SplitSTL drills aligned pin holes (printable pins included) or magnet pockets, and engraves each part’s number on its cut face. An illustrated assembly guide comes with the export.