Split3MF

Workflow guide

How to Split a 3MF File Online

Split3MF keeps the main 3MF workflow in the browser: open a model, choose the operation that matches the job, preview the geometry, and export only after the pieces look right.

FAQ

A five-step workflow

  1. 1

    Open a 3MF, STL, or OBJ file and wait for the 3D preview.

  2. 2

    Choose Split colors for a painted multicolor 3MF, or choose Plane cut, Sketch cut, or Fit to Printer for geometry-based pieces.

  3. 3

    Preview the new parts, undo a step when the seam or color boundary is not useful, and repeat as needed.

  4. 4

    Add connectors or cut labels when assembly needs alignment.

  5. 5

    Export plain 3MF, STL parts, or the advanced Bambu Studio project and slice the files in your own slicer.

Start with the right input

A painted 3MF carries the color information needed for color splitting. STL has geometry but no native color assignment. OBJ may use an MTL file or vertex colors, so select the matching files together when prompted.

Split by color

Click a painted region and split it off. Repeat for each color that should become a separate part. Thin painted details may be pressed in rather than removed as a hollow piece, and very small islands may be merged or left in place.

Cut or fit the model

Use a plane for a flat seam, a sketch for a custom cut, or Fit to Printer when the model exceeds the selected build volume. The fit planner shows cuts before applying them so you can avoid fragile details.

Preview and export

Use the exploded view, part list, and plate preview where available. Check the output in Bambu Studio, OrcaSlicer, PrusaSlicer, or your preferred slicer before printing.

Limits to keep in mind

The browser tool does not choose supports, guarantee a watertight result for every input, or replace a final slicer preview. Large or damaged meshes may take longer or need Repair & simplify first.

Try Split3MF in your browser

Open a real model, preview the operation, and decide what to export.

Try a sample model