Free, browser-based 3D coin, medallion and commemorative plaque designer — upload a portrait, configure your design, and export a print-ready STL file in seconds.
3D Coin Sculptor turns a flat portrait photo or depth map into a fully 3D bas-relief mesh ready for:
- 3D printing (FDM, SLA, SLS)
- Bronze / silver casting via lost-wax or sand casting
- CNC milling of commemorative coins and medallions
- Digital collectibles and NFT coin art
No CAD knowledge needed. No subscription. Runs entirely in your browser.
_Add your own screenshots here — one of the 3D viewer, one of the settings panel._
https://3d-sculptor.vercel.app
| Feature | Detail |
|---|---|
| AI Portrait Relief | Converts any image into a depth map using AI; brighter pixels = higher relief |
| Arc Inscription Text | Top and bottom arc text with auto-fit font sizing and span control |
| 3 Sculpting Modes | Raised (3D), Emboss (soft rounded relief), Engraved (intaglio) |
| Signature Font Choice | Great Vibes cursive or Trajan Pro Bold (better for casting) |
| Portrait Medallion Ring | Auto-positioned border ring between portrait and text arc |
| Double-Faced Coins | Mirror design on the back face — text reads correctly on both sides |
| Show / Hide Rim | Toggle a raised border edge with configurable width and height |
| 4 Presets | Pocket Coin (38 mm), Plaque (150 mm), Primary Plaque (425 mm), Replica Pocket (39 mm) |
| STL Export | Watertight, manifold mesh ready to slice or send to a foundry |
| Advanced Materials | Gold, Silver, Bronze preview with metallic / roughness controls |
| Live 3D Viewer | Orbit, zoom and inspect the coin in real time with Three.js |
| Layer | Technology |
|---|---|
| UI Framework | React 19 + TypeScript |
| 3D Engine | Three.js r183 |
| AI Depth Model | @xenova/transformers (runs in-browser via ONNX) |
| Styling | Tailwind CSS v4 |
| Animation | Motion (Framer Motion) |
| Build Tool | Vite 6 |
| Fonts | Trajan Pro (local) · Great Vibes (Google Fonts) |
- Node.js ≥ 18
- npm ≥ 9
# 1. Clone the repo
git clone https://github.com/Operac/3d-coin-sculptor.git
cd 3d-coin-sculptor
# 2. Install dependencies
npm install
# 3. Start the dev server
npm run devOpen http://localhost:3000 in your browser.
npm run build
# Output → dist/- Choose a preset — Pocket Coin, Plaque, Primary Plaque or Replica Pocket
- Upload your portrait — high-contrast photo or grayscale depth map works best
- Add arc text — type your top and bottom inscriptions; adjust span and size
- Configure relief — choose Raised, Emboss or Engraved; set base height and rim
- Add a signature — pick Cursive or Trajan Pro font; position with sliders
- Enable the medallion ring — auto-positioned portrait border circle
- Export STL — download and open in your slicer or send to your casting house
- Use a grayscale depth map where white = highest point and black = base
- High-contrast portraits with a clean background produce the sharpest relief
- For bronze casting, set Relief Depth ≥ 2 mm and use Trajan Pro for text
- For 3D printing pocket coins, keep base height ≤ 2 mm and use Raised mode
| Preset | Diameter | Base Height | Relief | Use Case |
|---|---|---|---|---|
| Pocket Coin | 38 mm | 1.5 mm | 1.0 mm | Standard collector coin |
| Plaque | 150 mm | 4.0 mm | 3.0 mm | Wall-mounted medallion |
| Primary Plaque | 425 mm | 5.5 mm | 6.0 mm | Large commemorative plaque |
| Replica Pocket | 39 mm | 1.2 mm | 1.0 mm | Replica / challenge coin |
src/
├── components/
│ └── CoinViewer.tsx # Three.js 3D viewer with orbit controls
├── lib/
│ └── coinGenerator.ts # Core depth-map → mesh pipeline + text renderer
├── App.tsx # Main UI, settings panel, presets
└── main.tsx # Entry point + font pre-loading
public/
└── fonts/ # Trajan Pro (Regular, Semibold, Bold)
Pull requests are welcome! If you have ideas for new features — different coin shapes, QR code embedding, batch export, new font options — please open an issue first to discuss.
# Fork → clone → create a feature branch
git checkout -b feature/your-feature-name
# Make your changes, then open a PR3d-coin coin-designer medallion stl-generator 3d-printing bas-relief
commemorative-coin challenge-coin portrait-coin coin-maker plaque-designer
three-js react typescript depth-map relief-design coin-casting
bronze-coin stl-export coin-engraving numismatics 3d-printable
MIT — free to use, modify and distribute.
If this tool saves you time or helps your project, please star the repository — it helps others discover it and keeps development going.
Built for designers, makers, foundries and anyone who wants to create beautiful coins without expensive CAD software.