Photo to 3D Model in Fusion 360: Mesh to Solid
A model made from a photo is a mesh, not a CAD body, but it is still very useful in Fusion 360: as a reference to design a stand, case, mount or replacement part around, or as a solid you can cut and combine. This guide shows how to bring it in at the right size, slim it down and turn it into a body.
Try it with your own photo
Free preview, no account. Pay €1 only for the model you keep: OBJ, STL and GLB in one download.
Or open an example model
The short version
- Unzip your OBJify download and find
model_3dprint_150mm.stl. - Insert → Insert Mesh, units Millimeter.
- In the Mesh tab, Modify → Reduce to a few thousand faces.
- Modify → Convert Mesh to get a solid body.
- Use it to cut, combine and measure against your own design.
Which file to use
Use the STL. It is watertight (no holes), in millimetres, 150 mm on its longest side and already standing on the ground, which is exactly what CAD tools want. Fusion ignores colour textures, so the OBJ and GLB have nothing extra to offer here.
| File in the ZIP | What it is | Use it for |
|---|---|---|
model.glb |
Mesh, colour texture and material in one file. Y-up, about 1 m on its longest side. | Blender, Unreal, Unity (with glTFast), websites, AR |
model.obj + material.mtl + texture image |
Textured mesh, about 1 unit on its longest side, stored Z-up. Keep the three files in the same folder. | Unity, Maya, Cinema 4D, any 3D tool |
model_3dprint_150mm.stl |
Watertight solid, no colour, in millimetres: 150 mm on its longest side, standing on Z = 0. | Slicers, Fusion 360, FreeCAD |
Models are around 55,000–60,000 triangles with a single colour texture (no normal or roughness maps). Files are deleted from our servers after an hour, so keep the ZIP.
1. Insert the mesh at the right size
- In the Design workspace, choose Insert → Insert Mesh and pick
model_3dprint_150mm.stl. - In the dialog, set Unit Type to Millimeter. Use Center and Move to Ground if it isn't where you want it.
- Click OK. The model appears as a mesh body in the browser.
If you know the real size of the object, scale it now (Modify → Scale) using a dimension you've measured, for example its height.
2. Reduce the mesh
The model has tens of thousands of triangles. Converting all of them into CAD faces is slow and produces a heavy body, so slim it down first:
- Open the Mesh tab.
- Choose Modify → Reduce, select the mesh body and lower the face count. A few thousand faces keeps the overall shape of most objects.
- Check the result from a few angles before you continue. Undo and reduce less if important details disappear.
3. Convert it to a solid body
- Still in the Mesh tab, choose Modify → Convert Mesh.
- Select the reduced mesh body. Use the Faceted method: it turns every triangle into a flat face, which is the right choice for organic shapes.
- Click OK. You now have a solid body you can combine with others.
Be realistic about the result: it's a solid made of many small flat faces, not a clean model of cylinders and planes. It is perfect for cutting and fitting things around it, but you won't be editing its curves like a native CAD design.
4. What to do with it
- A stand or holder with a perfect fit: model your stand as a normal solid, position the model where it should sit, then Modify → Combine with Operation: Cut, the stand as target and the model as tool body. Tick Keep Tools if you still need the model.
- A case or mount: use the model as a reference body and sketch on planes through it. Section analysis (Inspect → Section Analysis) shows its exact profile at any height.
- Split it for printing: large models can be cut in two with Modify → Split Body along a plane, so each half prints without supports.
- Quick measurements: Inspect → Measure works on the mesh before you convert it.
When you're done, export the bodies you want to print as STL or 3MF and continue in your slicer, as shown in the image to STL guide.
Good to know
- The back of the object was never in the photo, so its exact shape is a best guess. Don't rely on it for precise fits on that side.
- Hard-surface objects such as electronics or furniture come out cleaner than soft, organic ones, but they'll still need your own CAD work for mating surfaces, holes and threads.
- Prefer FreeCAD? The same workflow is in the FreeCAD guide.
Frequently asked questions
Which file should I import into Fusion 360?+
The STL (model_3dprint_150mm.stl). It is watertight, already in millimetres at 150 mm on its longest side, and stands on the ground plane. Fusion does not use the colour texture, so the textured OBJ adds nothing here.
Can Fusion 360 turn the mesh into a solid body?+
Yes, with Convert Mesh in the Mesh workspace. Reduce the mesh to a few thousand faces first, because converting tens of thousands of triangles into faces is very slow and gives a heavy body.
Will the converted body have clean, editable faces?+
No. A model made from a photo is organic, so converting it gives a solid made of many small flat faces, not clean cylinders and planes. It works well for cutting, combining and measuring against, not for editing its surfaces like a native CAD model.
How do I design a stand or holder that fits the model?+
Model your stand as a normal solid, convert the mesh to a body, then use Combine with the Cut operation and the model as the tool body. The model's shape is subtracted from the stand, leaving a matching pocket.
What size does the model come in at?+
The STL is 150 mm on its longest side. Choose Millimeter in the Insert Mesh dialog so it keeps that size, then scale it if you know the real dimensions of the object.
Try it with your own photo
Free preview, no account. Pay €1 only for the model you keep: OBJ, STL and GLB in one download.
Or open an example model