3D Print Bed Arranger

Q: How does auto-arrange work?

It drops every object onto the plate, then packs their footprints in rows from tallest to shortest with a 5 mm gap and centers the group on the bed. It does not rotate parts, so lay them flat first if needed.

Q: What does Lay flat do?

It finds the largest flat face on the outside of the part and rotates the part so that face rests on the plate, which is usually the most stable orientation with the fewest supports.

Q: Will my slicer keep the arrangement?

Yes, when you download a 3MF. Each object is saved with its position on the plate, so Bambu Studio, PrusaSlicer and Orca open it in the same layout. An STL merges everything into one mesh in those positions.

Q: Are the printer sizes exact?

They are the manufacturers' nominal build volumes. Your slicer may reserve space near the edges, for the purge line or the wiper, so leave a few millimeters of margin.

Q: Are my files uploaded?

No. Files are read and processed by JavaScript in your browser tab, and downloads are generated locally. Nothing is sent to a server, so it also works with private or unreleased designs.

Check what fits on your printer's plate and lay out several parts before you open the slicer.

Open models to arrange

Drop STL or 3MF files, pick your printer, then drag, rotate, duplicate and auto-arrange them on the plate.

STL (binary or ASCII) and 3MF · files stay in your browser

How it works

Choose your printer (Bambu Lab A1 / A1 mini / P1S / X1C, Prusa, Creality or a custom size).
Open STL or 3MF files. Drag objects on the plate, or use Auto-arrange.
Rotate by 90°, lay a part flat on its largest face, duplicate it for a batch, or set exact position, rotation and scale.
Red means off the plate or too big for the printer; orange means footprints overlap. Download a 3MF that keeps the layout.

All five tools share one workbench, so files you open here stay loaded when you switch to STL & 3MF viewer, STL to 3MF, 3MF to STL or mesh editor.

3D Print Bed Arranger

How it works

FAQ

How does auto-arrange work?

What does Lay flat do?

Will my slicer keep the arrangement?

Are the printer sizes exact?

Are my files uploaded?

See also