Install

1. Blender 4.2 or newer — drag rego_3mf-1.0.1.zip into the Blender window, or Edit › Preferences › Add-ons › Install from Disk.
2. The panel lives in the 3D viewport sidebar (press N), 3Mffer tab.
3. Work in millimetres. The button at the top of the panel sets the scene to 1 Blender unit = 1 mm and never touches your geometry.

The panel is a five-step to-do list and each step ticks itself when it is really done.

1 · Load

Drag a .3mf anywhere in the viewport, or File › Import › 3MF for 3D print. Basematerials, colorgroup and Bambu/Prusa paint_color are all read; component objects are flattened with their transforms; a Bambu, Orca or Creality project that keeps its geometry in 3D/Objects/object_N.model is followed there, with its filament colours. Welding is on by default (0.0001 mm) because the paint presets need real edges to read curvature; set it to 0 to keep the file exactly as it is.

2 · Paint

Click any preset. The chip on the button is that preset's own palette. Filament slots caps how many filaments the result may use. Keep the model's own colours paints on top of what the file arrived with instead of a neutral body. Presets that use AO or thickness cast rays and are slower on a heavy import; their tooltips say so.

3 · Relief

Emboss ridges, engrave crevices or deepen recesses by the millimetre value you set. This moves real geometry — undo works, and so does running it twice.

4 · Export

• Colour 3MF — the universal one; the slicer creates a filament slot per colour.
• Painted 3MF — opens already painted in Bambu Studio, Orca, Creality Print and Snapmaker Orca.
• OBJ + MTL — use this past four filaments; both files are written side by side.
• STL — geometry only.

Bake Paint into Material Slots converts the paint to one material per filament.

5 · Tandem

With RegoSplit or Rego Kit Card installed, two extra buttons hand the painted model straight over — no re-export.

Tests

Run the suite yourself: blender --background --factory-startup --python tests_headless.py (62 checks, green on Blender 4.2, 4.5 LTS and 5.2).

Support

Questions and bug reports through the Superhive message system, or via regolith-highfield.com.

TUTORIALS & QUICK START GUIDE (coming soon, october 2026)

You do not have to work the panel out on your own.