Filament Painter

What is Filament Painter?

Filament Painter is a free web app for making HueForge-style filament paintings. It runs entirely in the browser: you import an image, define your filaments with their colors and opacity, and the tool builds a layered surface so that thin layers of different filaments blend into the picture. A real-time preview shows how the print should look.

You can choose how the image maps to height, with options such as nearest color match, grayscale luminance, grayscale max or a custom function, and set layer heights, physical size and resolution. Before exporting the STL it estimates the file size, which helps when a detailed image would create a huge mesh.

The tool is free for non-commercial use, and a commercial license costs $20. The source code is published on GitHub, and there is a small subreddit for help. It suits hobbyists who want to try filament painting on any printer with manual swaps before buying paid software.

What you can make

• Filament paintings
• Portraits
• Landscape art
• Logos with color blends

How to use Filament Painter

1. Open painter.vec4.ca
2. Import an image and add your filaments
3. Pick a height-mapping mode and layer height
4. Export the STL and set the color swaps in your slicer