Generate Gridfinity-Compatible Storage Bins
Free parametric generator for Gridfinity-compatible bins and baseplates — the modular 42 × 42 mm storage system designed by Zack Freedman (CC BY 4.0). Configure grid size, bin height in 7 mm units, magnet holes, screw holes, stacking lip and label ledge, then export ready-to-print STL. Handles 1×1 up to 10×10 grids for both single bins and baseplates.
How to generate Gridfinity bins
Bins hold things; baseplates are the grid they snap into. Most workshops print one large baseplate per drawer and multiple bins.
Measure your drawer to the nearest 42 mm — a 420 × 420 mm drawer fits a 10×10 baseplate.
Heights are in 7 mm units (the thickness of the baseplate foot). A U3 bin = 21 mm tall, U6 = 42 mm, U12 = 84 mm.
Adds 6 mm diameter × 2 mm deep holes on the bottom — glue in 6×2 mm neodymium magnets for extra hold on a steel tool tray.
Download STL, slice at 0.2 mm layer height and print with PLA or PETG. Most bins print in 1–4 hours depending on size.
Build modular workshop storage that snaps to the Gridfinity grid — bins and baseplates, any size, any height.
Grid
Options
Gridfinity is a CC BY 4.0 modular storage system designed by Zack Freedman. This generator outputs Gridfinity-compatible geometry and credits the original design.
Features
Frequently asked questions
What is Gridfinity?
Gridfinity is a modular workshop storage system designed by Zack Freedman and released under CC BY 4.0. It uses a 42 × 42 mm grid with 7 mm height units so bins, baseplates and accessories interlock cleanly in any combination.
Are these bins compatible with existing Gridfinity models?
Yes — the profile dimensions, chamfer angles, and tolerances match the published Gridfinity specification. Bins from Printables, Thingiverse or MakerWorld will snap onto baseplates this tool generates, and vice versa.
What magnet size do I need?
Standard Gridfinity magnets are 6 mm diameter × 2 mm thick neodymium (N35 or stronger). The holes this tool generates match those dimensions. Press-fit or glue with cyanoacrylate.
How do I credit Zack Freedman?
The STL header includes the CC BY 4.0 attribution. If you publish photos or sell prints, credit "Gridfinity by Zack Freedman (CC BY 4.0)" in the description — it is the primary requirement of the licence.
What print settings work best?
0.2 mm layer height, 2 perimeters, 15–25% infill, and PLA or PETG. Bins with thin walls (1.2 mm default) benefit from 3 perimeters for rigidity. Supports are rarely needed.
We can — and it's free! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.
