Put the numbers in the link
Every parameter is a link parameter; the link below opens the example part. ChatGPT, Claude or any assistant can write one like it from the parameter list (names, units, ranges) at: parameter list (JSON)
Gridfinity bin generator: custom bins, real CAD underneath
Size a Gridfinity bin in 42 mm grid units, add dividers, magnet holes and a scoop, and watch the model rebuild in your browser. Unlike one-shot STL customizers, every bin is parametric CAD code — so when you need something the sliders don't cover, the AI agent edits the same model for you.
Use it right here
The real generator runs in your browser: set the parameters, then download STEP or STL. Nothing to install, no sign-up.
The first open downloads the CAD engine (about 20 MB).
- - True Gridfinity spec: 42 mm pitch, 7 mm height units, stackable lip
- - Compartments by count; magnet holes (Ø6 × 2 mm) and a scoop at the flip of a switch
- - Exports clean STL / STEP — printable without supports
- - Need a label shelf or a custom cutout? Remix it with the AI agent
Parameters you can tune
Each parameter below rebuilds real geometry on every change — this is parametric CAD, not a scaled mesh.
| Parameter | Default | Range | What it does |
|---|---|---|---|
| Grid units XGRID_X | 3 u | 1 – 8 | Bin width in 42 mm Gridfinity units. |
| Grid units YGRID_Y | 2 u | 1 – 8 | Bin depth in 42 mm Gridfinity units. |
| Height unitsHEIGHT_U | 6 u | 2 – 12 | Bin height in standard 7 mm increments. |
| Compartments XDIV_X | 1 | 1 – 6 | Number of compartments along the width. |
| Compartments YDIV_Y | 1 | 1 – 6 | Number of compartments along the depth. |
| Stacking lipSTACKING_LIP | True | on / off | Top lip so another bin stacks on this one. |
| Magnet holesMAGNET_HOLES | False | on / off | Ø6 × 2 mm magnet pockets, four per 42 mm grid unit. |
| ScoopSCOOP | True | on / off | Curved front floor so small parts slide out. |
Every parameter can go in the page's link, so one link opens exactly the part you want. Example (2 × 1 bin, 3 units tall, three compartments, magnet holes):https://www.forgent3d.com/en/generators/gridfinity-bin-generator?GRID_X=2&GRID_Y=1&HEIGHT_U=3&DIV_X=3&MAGNET_HOLES=true
What's in the STEP file
- - The base feet, stacking lip and rounded corners export as exact planes, cylinders and cones — 220 faces for the default 3 × 2 bin, every 45° slope a true cone where it turns a corner.
- - So the bin can be measured against the Gridfinity spec in CAD, or reworked in Fusion or Onshape without fighting a mesh.
STEP AP214 in millimetres, exact B-rep — it opens directly in SolidWorks, Fusion, FreeCAD, Onshape or Inventor, and goes straight into a CNC quote form. STL for the slicer is one click too.
How it compares
| This generator | Typical online STL generator | Vendor CAD library | |
|---|---|---|---|
| Any size within the range | Yes | Yes | Catalog sizes only |
| STEP with exact surfaces | Yes | Usually an STL mesh only | Yes |
| Changes the sliders don't cover | “AI edit” on the page | No | No |
| Account needed to download | No | Usually no | Often |
Let AI change it
Edit with AI on the page
Press “AI edit” in the generator and say what to change — a keyway, holes, a different shape. The AI edits the part's model.py and it rebuilds in your browser, with undo. A few edits a day are free without signing in; to keep the result or go further, copy it into your models and continue with the AI agent.
Edit with AI →Keep going in your workspace
For bigger changes, several rounds, or a part you want to keep: copy it into your models (free account). The Forgent3D AI agent reads the model.py, edits it, rebuilds it and checks the result itself.
Copy and continue with the AI agent →How it works
- 1.Open the generator — the model builds right in your browser, nothing to install.
- 2.Tune dimensions and options in the parameter panel; the geometry rebuilds live in 3D.
- 3.Export STL / STEP for printing — or ask the AI agent for features beyond the sliders.
FAQ
What magnets fit the magnet holes?
The base pockets are sized for the de-facto Gridfinity standard: Ø6 mm × 2 mm neodymium disc magnets, four per 42 mm grid unit (one near each corner). Glue-in is optional — bins also sit fine on a baseplate without magnets.
Do Gridfinity bins print without supports?
Yes. The base profile, stacking lip and scoop are all designed within FDM overhang limits. Print bins flat on the bed in PLA or PETG at 0.2 mm layers; no supports and no brim needed on a clean bed.
Can I change something the parameters don't cover?
Yes — that is the point of Forgent3D. The bin is generated from editable CAD code, so you can copy it into your workspace and ask the AI agent for label tabs, finger slots, custom cutouts or a non-standard footprint.
How do I make a 2 × 1 Gridfinity bin with three compartments and magnet holes?
https://www.forgent3d.com/en/generators/gridfinity-bin-generator?GRID_X=2&GRID_Y=1&HEIGHT_U=3&DIV_X=3&MAGNET_HOLES=true opens exactly that bin (height in 7 mm units). Download STL to print it, or STEP to keep editing in CAD.
Can I add a label shelf or a cut-out for a specific tool?
Press “AI edit” in the generator and describe it (“a 12 mm label shelf along the front”); the AI edits the bin’s model.py and it rebuilds in your browser. For a bigger redesign, copy the bin into your models and keep going with the AI agent.
Can I sell prints made with these generators?
Yes. Models you generate and the STL / STEP files you export are yours: print them, sell the prints, or use them in a product. No attribution to Forgent3D is required.
More generators
Gridfinity Baseplate GeneratorParametric Box GeneratorTool Tray GeneratorHex Bit Holder Generator3D print generators →
Already have your own .scad file? Convert OpenSCAD to STEP → · Preview it in the browser →