Tracefinity

Gridfinity is a modular storage system designed by Zack Freedman. Bins snap into baseplates on a 42mm grid, making it easy to organise tools, components, and supplies. The system is open source and hugely popular in the 3D printing community.

Features:

• AI-powered tracing -- Local model or Gemini generates accurate tool silhouettes from photos
• Manual mask upload -- Use the Gemini web interface without an API key
• Selective saving -- Choose which traced outlines to keep before saving to your library
• Tool library -- Save traced tools and reuse them across multiple bins
• Tool editor -- Rotate tools, add/remove vertices, adjust outlines, snap to grid
• Smooth or accurate -- Toggle Chaikin subdivision for smooth curves, or keep the raw trace; SVG and STL exports both respect this
• Finger holes -- Circular, square, or rectangular cutouts for easy tool removal
• Interior rings -- Hollow tools (e.g. spanners) traced correctly with holes preserved
• Bin builder -- Drag and arrange tools with snap-to-grid, auto-sizing to fit the gridfinity grid
• Cutout clearance -- Configurable tolerance so tools fit without being too loose
• Cutout chamfer -- Bevelled top edges on tool pockets for easy tool insertion
• Contrast insert -- Generate a separate STL for printing tool silhouettes in a different colour
• Text labels -- Recessed or embossed text on bins
• Gridfinity compatible -- Proper base profile, magnet holes, stacking lip
• Live 3D preview -- See your bin in three.js before printing
• STL and 3MF export -- 3MF supports multi-colour printing for embossed text
• SVG export -- Individual tool outlines as SVG, with smoothing applied
• Bed splitting -- Large bins auto-split into printable pieces with diagonal fit detection
• Landscape and portrait -- Paper orientation auto-detected from corner positions
• Single-container Docker -- Frontend and backend in one image, data in a single volume