Free tool

Gridfinity generator

Set the size in grid units, add dividers and magnets, and download a bin or baseplate STL. No account, made on your computer.

Runs in your browser. Nothing is uploaded.

How to use it

1Pick bin or baseplate
A bin is the box that holds things. A baseplate is the open grid that sits in the drawer and holds the bins in place.
2Size it in grid units
Width and depth count 42 mm grid cells, height counts 7 mm units. The size in millimetres updates under the preview as you move the sliders.
3Add what you need
Dividers across the width or depth, a stacking lip, a label shelf, 6 x 2 mm magnet holes or M3 screw holes.
4Download and print
Download a watertight STL or 3MF and slice it like any other part. No account, and the file is made on your computer.

What the Gridfinity generator makes

Two parts, both to the open Gridfinity standard:

Bins from 1 x 1 to 10 x 10 grid units and 2 to 20 height units (14 to 140 mm), with walls from 0.8 to 2.4 mm.
Baseplates from 1 x 1 to 10 x 10 cells, 42 mm a cell and 5 mm tall, open underneath.

Every part comes out as one closed solid, checked before you download it, so slicers open it without repair.

Gridfinity sizes in millimetres

Grid units	Bin outside size	Baseplate outside size
1	41.5 mm	42 mm
2	83.5 mm	84 mm
3	125.5 mm	126 mm
4	167.5 mm	168 mm
5	209.5 mm	210 mm
6	251.5 mm	252 mm

Height works the same way in 7 mm steps: 2 units is 14 mm, 3 units 21 mm, 4 units 28 mm, 6 units 42 mm. Measure the inside height of your drawer and subtract 5 mm for the baseplate and 4.4 mm for the stacking lip if you keep it.

Dividers, labels and magnets

Dividers split a bin into compartments: up to 9 across the width and 9 across the depth, 1.2 mm thick. A 3 x 2 bin with 2 dividers across makes three long trays for screwdrivers or bits.
Label shelf adds a flat ledge along the inside of the back wall for a printed or paper label, with an angled support under it so it prints without supports.
Magnet holes take 6 x 2 mm disc magnets under each foot, so bins stay put on a steel sheet or a magnet baseplate.
Screw holes take M3 screws for bins that should not move at all.

Printing Gridfinity parts

Bins and baseplates print flat on the bed with no supports. PLA or PETG both work. Two or three walls give stiff sides; the floor and feet do not need much infill. If your bins sit tight in the baseplate, check the first layer is not squashed wider than it should be before changing the model.

When you need more than the generator

To put a name on a bin, merge a bin with a holder for one particular tool, or cut a cutout to the exact shape of what goes inside, open the same generator in Depthue Studio. To price a drawer full of bins before you print it, drop the STL into the 3D print cost calculator, and check any part in the STL viewer.

Questions

What is Gridfinity?

Gridfinity is an open, modular storage system for 3D printers, created by Zack Freedman. Bins of any size sit on a baseplate with a 42 mm grid, so they stay put in a drawer and can be moved around. Anyone can make and share parts for it.

Is this Gridfinity generator free?

Yes. It runs in your browser with no account and no limit, and the STL or 3MF is written on your computer. Depthue Studio is the paid next step if you want to combine bins, add text or edit the mesh.

Will these bins fit my existing Gridfinity baseplates?

They are built to the published dimensions: a 42 mm grid, bins 0.5 mm under the grid (41.5 mm for one unit), the stepped foot and 7 mm height units. So they drop into standard baseplates, and standard bins fit the baseplate made here.

How big is a 2 x 1 Gridfinity bin?

83.5 x 41.5 mm. Each grid unit adds 42 mm, minus 0.5 mm of clearance on the whole bin: 1 unit is 41.5 mm, 2 units 83.5 mm, 3 units 125.5 mm and 4 units 167.5 mm.

How tall is a Gridfinity bin?

Height counts 7 mm units, base included. A 3 unit bin is 21 mm to the top of the wall and a 6 unit bin is 42 mm. The stacking lip adds 4.4 mm so another bin can sit on top.

What magnets do Gridfinity bins use?

6 x 2 mm disc magnets. The holes here are 6.5 mm across and 2.4 mm deep, the size the gridfinity-rebuilt reference uses, so the magnet presses in with a little room for glue.

My printer bed is too small for the baseplate. What do I do?

Print several smaller baseplates. Each one is exactly 42 mm per cell on the outside, so a 4 x 4 and a 2 x 4 sit side by side as a 6 x 4 grid. A 5 x 5 baseplate is 210 mm square and fits a 256 mm bed.