Gridfinity Bins with Sliding Lids — Configure in Your Browser

### Configure it in your browser

https://alex499.github.io/gridfinity-bin/

Pick the footprint, the height, how many compartments you want and how it closes, then download the STL. There is nothing to install and no account to make, and nothing you type is uploaded anywhere — the page runs OpenSCAD itself, compiled to WebAssembly, so the model is built on your own machine. A bin takes about half a second.

The whole configuration lives in the address bar, so a link reproduces a bin exactly: bookmark one, or send it to someone. The attached STLs are a few common sizes for anyone who would rather just print something.

What it is

A Gridfinity bin generator written from scratch, sized to the grid — 42 mm pitch, 7 mm height unit, total height units_z x 7 + 4.4 mm measured from the bottom of the feet. The full foot profile is there (0.8 / 1.8 / 2.15 mm), and the stacking lip is built to the official spec (0.7 / 1.8 / 1.9 mm, 4.4 mm total) rather than copied from an existing mesh.

The feet are hollow: the cavity runs down into the base and leaves only a thin skin, the ultra-light, no-magnets approach. Inside a foot the cavity is a single taper instead of a copy of the stepped outer profile — less plastic, and no horizontal overhang ledges.

The slot, and the two things that go in it

Just under the rim runs a slot that a plate slides into. The wall thickens through a 45° ramp and steps back, and that step is the ledge the plate rests on. Nothing is built above it: the stacking lip's own support cone is lowered onto the ceiling of the slot and is what holds the plate down.

Two plates use that slot:

- a clip-on label card, 15 mm deep by default

- a sliding lid covering the whole bin

The lid adds a tab that fills the mouth it slides through and restores the piece of stacking lip that mouth cut away — so a closed bin still stacks. Printed flat, the lid has no downward-facing face at all.

Both snap into place: a round pin is sunk into each side wall and stands proud of it, and the plate's edge snaps over it into a matching seat.

You do not have to choose. On "auto" the bin decides for itself — a card while it is undivided, a lid once it is not, because a lid is the only thing that stops contents crossing between compartments — but you can ask for either outright.

Compartments

One number sets the whole layout. Two compartments sit side by side; three put a row of two in front of a single one; four is two by two. Every row gets its own scoop, grown from its own outer wall — the front row from the front, the back row from the back — so each row is a little bin of its own, facing its own end.

Turn on the split lid and it comes as one piece per compartment, so a cell opens without pulling the whole lid off. The divider under a seam becomes a rail that holds the two pieces the way the walls hold their outer edges, with 45° flares so no overhang needs support, and it sits flush: nothing of the rail stands above the closed lid. With two rows the bin gets a second mouth in the back wall, so each row slides in from its own end.

Printing

The lid and the card are separate parts, and both are per bin size — a card for a 1x1 will not span a 2x2. With the split lid, one render gives you the whole set, already laid out flat and a gap apart.

One thing worth knowing: wall thickness also sets the skin left inside the feet, and because the foot cavity is a single taper that skin is thinner than the wall where the taper passes closest to the outer surface — 0.69 mm at the default 1 mm wall. Raise the wall if your nozzle needs more.

Credits

Gridfinity is a storage system designed by Zack Freedman. This is an independent implementation of the format, not affiliated with him.

This model is a compilation of three existing designs, reimplemented as one parametric model. The geometry was matched by measuring the published STLs in cross-section, not by converting or editing the meshes — and where the sources disagree with the official Gridfinity dimensions, the spec wins.

- Gridfinity Bins medium size by Plastic Flow — CC BY 4.0  https://www.printables.com/model/710839-gridfinity-bins-medium-size

- Gridfinity UltraLight Bins – Modular Clip-On Label System by Muad'Dib — CC BY-NC-SA 4.0  https://www.printables.com/model/1481418-gridfinity-ultra-light-bins-modular-clip-on-label

- Gridfinity 1 x 1 x 2 and 1 x 1 x 3 inserts with cover, divided in multiple ways by mhejjas — CC BY 4.0 — https://www.printables.com/model/665798  (the sliding lid, the free divider grid and the round detent)

### Source and license

Source, in OpenSCAD with no external libraries:

https://github.com/alex499/gridfinity-bin

CC BY-NC-SA 4.0. This is not a free choice — one of the three sources is published under that license, and its ShareAlike term requires the same of anything derived from it.