What is the Prusa CORE One's build volume?
250 × 220 × 270 mm (about 9.8 × 8.7 × 10.6 inches). The CORE One+ is listed at the same 250 × 220 × 270 mm.
Printer guides › Prusa CORE One
How to print models bigger than the Prusa CORE One
The Prusa CORE One has a build volume of 250 × 220 × 270 mm. It's taller and slightly deeper than the MK4, which can save cuts, but long and wide models still need splitting.
To print something larger, split the STL into pieces that fit and join them after printing. PrintSlice does the splitting in your browser: with default settings each piece is at most 238 × 208 × 258 mm, and you can add pin, key or dovetail connectors on the cut faces so the pieces line up and snap together.
Open PrintSlice with a 250 × 220 × 270 bed
Free to split and preview, and your first model is free to download. The bed size is filled in for you.
Prusa CORE One at a glance
Build volume250×220×270mm
Largest piece238×208×258mm
Example2pieces
Example: A tall lamp shade (220 × 200 × 500 mm) doesn't fit the CORE One. PrintSlice splits it 1 × 1 × 2 into 2 pieces of about 220 × 200 × 250 mm, each of which fits the bed.
The CORE One+ is listed at the same 250 × 220 × 270 mm.
How to split a model for the CORE One
- Open PrintSlice with the CORE One bed size and drop in your STL file, or try the sample model.
- Press Split into bed-sized pieces. PrintSlice works out the smallest grid of equal pieces that fits, cutting along all three axes if it needs to.
- Open a piece's preview and click a cut face to add a key, pin or dovetail connector. Then download the pieces and slice them in PrusaSlicer as normal.
Tips for splitting on the CORE One
Coming from an MK4? Re-enter the bed
Don't reuse your MK4 numbers: the CORE One's extra 10 mm of depth and 50 mm of height can save a lot of cuts. The lamp shade in the example needs 2 pieces on the CORE One but 6 on an MK4.
Front to back is still the short side
The bed is 250 mm wide but 220 mm deep. If a model's longest side runs front to back, rotate it 90° before splitting.
Use the enclosure for PETG and ASA
The heated chamber suits big functional parts. ASA shrinks slightly more than PLA, so try 0.3 mm connector clearance if joints are tight.
Questions
What's the largest single piece PrintSlice makes for the CORE One?
With default settings, 238 × 208 × 258 mm. PrintSlice keeps 5.6 mm clear on every side: a 2 mm safety margin you can change, plus 3.6 mm so connector tabs still fit on the bed.
Can't I just split the model in PrusaSlicer?
PrusaSlicer's cut tool is fine for one or two cuts you place by hand. PrintSlice is quicker when a model needs several: it works out every cut from your bed size, splits along all three axes in one go, and adds key, pin or dovetail connectors on the seams.
Will the printed pieces fit back together?
Yes. Each tab and socket pair is made from the same shape with a small built-in clearance (0.2 mm by default, adjustable per connector), so the pieces push together without sanding. You can choose a rectangular key, a round pin or a dovetail, which resists being pulled apart.
Is my model uploaded anywhere?
No. The splitting, connectors and 3D preview all run in your browser, so your STL file never leaves your computer.
Does PrintSlice cost anything?
Splitting and previewing is free, with no account needed, and your first model is free to download with a free account. To download more models, start a 7-day free trial (a card is needed, but you aren't charged until the 7 days are up and you can cancel before then). After that it's £3.99 a month.
Does this work for the CORE One+?
Yes. It's listed at the same 250 × 220 × 270 mm build volume.