Gridfinity is brilliant — a modular, open-source storage system that turns messy drawers into neatly organized tool stations. But if you've ever tried to design a custom tray that actually fits your tools, you know the pain: fire up Fusion 360 or OpenSCAD, learn parametric modeling, measure every tool by hand, sketch pockets one at a time, and hope the tolerances work out after a 2-hour print.

There's a faster way. With AI-powered tray generators, you can skip CAD entirely and go from a photo of your tools to a print-ready 3MF file in minutes. Here's how.

The Problem with Traditional Gridfinity Customization

The standard approach to custom Gridfinity trays involves CAD software. Fusion 360 has a popular Gridfinity add-in, and OpenSCAD has parametric generators like Trayfinity. These work well if you're comfortable with CAD — but most people who want organized tool drawers aren't mechanical engineers.

Even the web-based generators (like Gridfinity Generator or GridfinityTrayLayout) only produce rectangular grid divisions. If you want pockets shaped to your actual tools — sockets, pliers, screwdrivers of varying lengths — you're back to manual CAD work.

The real bottleneck isn't printing. It's designing.

The Photo-to-Tray Approach

A newer category of tools flips the workflow: instead of measuring tools and drawing pockets in CAD, you take a photo of your tools laid out on a surface, and AI handles detection and pocket generation.

The basic idea is simple. Lay out your tools on a reference surface (a sheet of paper works for scale), snap a photo, and let computer vision detect each tool's outline. Then you arrange those outlines into a tray layout and export a file your 3D printer understands.

This skips the two hardest parts of CAD-based workflows: measuring and modeling.

How GridPilot Works (Step by Step)

GridPilot is a web app that takes this approach end-to-end, generating complete 3D models — not just outlines — with Gridfinity-compatible stacking feet, custom pockets, and optional printed labels.

1. Define your tray size. Pick Gridfinity units (like 3×2) or enter custom dimensions in millimeters.
2. Upload a photo of your tools. Place your tools on a sheet of paper for scale. The AI detects each tool and creates an outline automatically — no tracing or measuring needed.
3. Arrange your layout. Drag detected tools into your tray. Use auto-arrange to pack them efficiently, or position them manually. Add labels if you want text embossed on each pocket.
4. Export a print-ready 3MF. GridPilot generates a complete 3D model with proper pocket depths, Gridfinity stacking feet, and wall thickness. Download the 3MF and send it straight to your slicer.

The whole process takes a few minutes. No CAD installation, no parametric sketching, no manual measurements.

What Makes This Different from Parametric Generators

Parametric Gridfinity generators are great for uniform bins — equal-sized compartments in a grid. But they can't create pockets shaped to specific tools because they don't know what your tools look like.

The photo-based approach solves this by working from reality: your actual tools, at their actual sizes, detected by AI. The output is a tray where every pocket matches the tool that goes in it — like a custom foam insert, but 3D printed and reusable.

And because GridPilot outputs a full 3D model (not just 2D outlines or DXF paths), the file includes proper pocket walls, floor thickness, and Gridfinity-standard stacking feet that snap onto any Gridfinity baseplate.

Tips for the Best Results

Use good lighting. Shoot your tools in even, diffused light. Harsh shadows confuse the AI detection.

Spread tools apart. Leave a finger's width between tools so the AI can distinguish separate objects.

Include a reference sheet. A standard Letter or A4 sheet in the photo lets the system calibrate scale accurately.

Start with a small tray. A 2×2 or 3×2 Gridfinity tray is a great first project. You'll have a printed result in under an hour.

Ready to skip the CAD?

GridPilot turns a photo of your tools into a print-ready Gridfinity tray. Free to design, no account required.

Start Designing →