3D Print a Person From a Photo
One clear photo in, one printable STL out. This page covers the whole path: how to shoot the photo, how the mesh is built, and how to size it before you slice.
Prepare your photo
The photo decides the ceiling on quality. Everything downstream is reconstruction from what the camera captured, so a soft, front-lit, evenly exposed frame beats a higher-resolution photo taken in bad light.
A single subject against a plain background is the ideal input. If the background is busy, remove it first — the model will otherwise try to reconstruct the wall behind the person.
Shoot front-facing
A head-on frame gives the reconstruction the most symmetric information. Extreme angles force it to invent the far side.
Use soft, even light
Open shade or a bright overcast day. Hard sun creates deep shadows the model reads as real geometry.
Remove the background
A plain or removed background keeps the mesh on the person instead of the room.
Crop to the subject
Fill the frame with the person. Wasted pixels are wasted resolution.
Convert to a 3D mesh
Upload the photo to the Studio and run it through image-to-3D. The pipeline reconstructs the volume, unwraps UVs and bakes texture maps, then hands you a GLB you can inspect from every side before committing to a print.
This is the step where comparing engines pays off. On a portrait, one engine will produce a cleaner silhouette while another keeps more of the facial relief. Run the same photo through both and keep the better mesh.
Size it before you slice
A generated mesh is normalised to a 100 mm longest edge, which is a sane starting point but rarely the size you actually want. Scale it deliberately in millimetres rather than by eye.
| Project | Typical height | Wall | Notes |
|---|---|---|---|
| Desk bust or head | 80–120 mm | solid | Reads well in resin; PLA shows layer lines on faces. |
| Full-body figurine | 150–200 mm | 2–3 mm shell | Hollow it to save material and reduce warping. |
| Tabletop miniature | 28–35 mm | solid | Resin only. Facial detail is lost below 28 mm. |
| Keychain or magnet | 40–60 mm | solid | Scale down, then add a loop in the STL editor. |
Pick the right printer
FDM prints people acceptably at bust scale and above, where layer lines read as texture rather than noise. Below about 60 mm the lines dominate the face and resin becomes the only sensible choice.
Either way, orient the model so supports land on the back of the head rather than the face, and hollow anything taller than 100 mm.
Questions about printing a person
Can I really 3D print a person from one photo?
Yes, with limits. A single front-facing photo reconstructs the visible side well and infers the rest, so the face reads correctly while the back of the head is smoother than reality. Two or three angles give a noticeably better result.
How much does it cost to print?
PLA runs about $20–30 per kg and resin about $25–50 per litre. A 150 mm hollow figurine typically uses under 150 g, so material cost is a few dollars.
Should I print solid or hollow?
Hollow anything above about 100 mm. A solid figurine wastes material, takes far longer, and warps more. Use the STL editor's hollow operation with a 2–3 mm wall.
How do I add a base so it stands up?
Generate or import a base disc in the STL editor and use combine to union it with the figurine. Check the result is watertight before slicing.
Why does the face look wrong?
Almost always the input photo: hard shadows, motion blur, or an angled face. Re-shoot front-on in even light and regenerate.
Can I paint it afterwards?
Yes. Prime with a filler primer to hide layer lines, then paint with acrylics. Resin prints need less sanding than FDM.
Is it legal to print a person?
Printing yourself or someone who has agreed is fine. Printing a public figure for commercial sale can raise publicity or likeness issues — check before you sell.
Which file do I send to the slicer?
STL or 3MF. STL is the safest, while 3MF keeps units and colour if your slicer supports it.
Start from a photo
One clear photo in, one printable STL out. This page covers the whole path: how to shoot the photo, how the mesh is built, and how to size it before you slice.