Edit Thingiverse, Printables & Cults3D models on iPad
Download any STL or 3MF from Thingiverse, Printables, or Cults3D in Safari, open it in Forma3D, and edit the mesh right on your iPad or iPhone — resize it, split it into printable parts, repaint colors, or repair it — without touching a desktop.
Updated October 30, 2026 · Published by Forma3D
The mobile model-download workflow
- Download in Safari — STL/3MF files land in Files → Downloads
- Open in Forma3D — share sheet on the file → choose Forma3D
- Inspect — check dimensions with the ruler, inspect with wireframe/X-Ray
- Edit — scale, cut, split with alignment joints, repair, or paint
- Export — STL or 3MF ready for your slicer or MakerWorld upload
Edits people actually need on downloaded models
| Problem with a downloaded model | Fix in Forma3D |
|---|---|
| Too big for the build plate | Numeric scale in mm, or split with alignment joints |
| Wrong orientation or needs a section removed | Manifold Cut, Boolean Subtract |
| Multi-color print wanted, but model is single STL | Paint faces → export as colored 3MF |
| Mesh errors after download/conversion | Bridge open loops, repair non-manifold edges |
| Needs personalization (name, logo) | 3D text extrusion, sketch-to-mesh tools |
What about MakerWorld 3MF downloads?
MakerWorld serves 3MF with print profiles — Forma3D reads them fully, including per-face colors. You can repaint a downloaded 3MF's filament assignments and re-export it, or upload your own model to MakerWorld from iPhone.
Frequently asked questions
Can I edit a Thingiverse STL file on iPad?
Yes. Download the STL in Safari on your iPad, open it with Forma3D from the share sheet, and edit the mesh — resize, cut, split into parts, paint colors, or repair — then export for your slicer.
How do I open a Printables or Cults3D download on iPhone?
Download the model file in Safari — it lands in Files → Downloads. Open the share sheet on the STL or 3MF and choose Open in Forma3D to view, measure, and edit it.
Can I split a downloaded model that is too big for my printer?
Yes. Forma3D's Manifold Cut and splitting tools slice oversized models into printable parts, and can add alignment joints — cone, cylinder, square, or ball — so the pieces snap together after printing.
Get started
Forma3D is free to download on the App Store. Full-access features use in-app purchases — monthly, annual, or lifetime.
Next steps: split STL with alignment joints, view STL files on iPhone, or paint for multi-filament printing.