Gridfinity Boxes 42mm
The phrase gridfinity boxes 42mm hides a quiet ambiguity, because 42mm describes two different things in this system: the pitch of the grid every box sits on, and the height of one very popular box. The gridfinity boxes 42mm builder above covers both readings. Pick grid pitch mode and size boxes freely in cells and U units; pick height mode and the tool locks the box to 6U, which stands exactly 42mm tall before its lip.
Whichever reading you meant, the STL follows the community gridfinity standard to the letter: 42mm between cell centers, 0.5mm of total outline clearance, and heights built from 7mm U units with the 4.75mm foot included. A 1 × 1 part from the gridfinity boxes 42mm builder prints 41.5mm wide in both modes — the mode changes what you control, never the geometry underneath.
Gridfinity boxes 42mm: two meanings, one builder
People who search for gridfinity boxes 42mm usually arrive with one of two mental models. Some mean boxes on the 42mm grid — the storage bins that click onto any community baseplate. Others mean boxes that stand 42mm tall, a height that happens to be exactly 6U and is the most requested bin height for screws, bits and small parts. The interpretation switch at the top of the tool asks which one you are, then adjusts every field accordingly, because both readings print real, compatible gridfinity boxes 42mm — the builder just needs to know which number you are asking about.
Meaning one: 42mm as the grid pitch
In pitch mode, the 42mm in gridfinity boxes 42mm is the spacing between neighboring cell centers. You set width and depth in cells and height in U units, and the builder computes the printable size: cells × 42mm − 0.5mm for the outline, U × 7mm for the height, plus 3.8mm when the stacking lip is on. A 1 × 1 box prints 41.5 × 41.5mm; a 2 × 3 box prints 83.5 × 125.5mm. That is the everyday reading of gridfinity boxes 42mm — most bins in most drawers are exactly this.
Meaning two: 42mm as the box height
Height mode reads gridfinity boxes 42mm as a height request and locks the box to 6U. Six U units at 7mm each equal exactly 42mm of nominal height — the foot's 4.75mm already counted inside — and 45.8mm at the tallest printed point once the stacking lip is included. Width and depth stay yours to choose in cells, so filling a drawer with gridfinity boxes 42mm tall takes three clicks.
| Setting | Pitch mode | Height mode |
|---|---|---|
| The 42mm refers to | Grid spacing between cells | Nominal height: 6U × 7mm |
| Width and depth | Free, in grid cells | Free, in grid cells |
| Height | Free, 2U to 12U | Locked at 6U = 42mm |
| 1 × 1 box prints | 41.5 × 41.5mm | 41.5 × 41.5mm |
| Tallest point with lip | U × 7mm + 3.8mm | 45.8mm |
Print gridfinity boxes 42mm tall: height mode in detail
A set of gridfinity boxes 42mm tall has a satisfying property: the height in millimeters equals the grid pitch, so one number describes the part in both directions. With the stacking lip the tallest point reaches 45.8mm, which matters under a closing drawer lid. Because every box in height mode shares the same 6U body, identical boxes stack and nest interchangeably, and a drawer full of them reads as deliberately uniform rather than accidental — the quiet appeal of gridfinity boxes 42mm locked at one height.
The grid behind gridfinity boxes 42mm: pitch mode in detail
Pitch mode is the general-purpose reading of gridfinity boxes 42mm: any cell count from 1 × 1 upward, any height from 2U (14mm) to 12U (84mm). The outline rule never changes — subtract 0.5mm once for the whole part, never per cell — so a 3-cell width is 125.5mm and a 4 × 3 box footprint is 167.5 × 125.5mm. The matching baseplate prints at cells × 42mm with no subtraction, which is why a 4 × 3 plate is 168 × 126mm while the box that fills it is half a millimeter shy on each side.
Sizes the gridfinity boxes 42mm builder produces
- 1 × 1 box, either mode: 41.5 × 41.5mm outline.
- 2 × 3 box in pitch mode: 83.5 × 125.5mm outline.
- 6U height, either mode: 42mm nominal, 45.8mm with the stacking lip.
- 4 × 3 footprint: 167.5 × 125.5mm box on a 168 × 126mm plate.
How to build gridfinity boxes 42mm here
- 1
Answer the interpretation question
The 42mm in gridfinity boxes 42mm must mean pitch or height before anything else computes — the switch at the top decides.
- 2
Set the cells
Enter width and depth in grid cells; the outline math, cells × 42mm − 0.5mm, applies instantly to the preview.
- 3
Set the height
In pitch mode choose anything from 2U to 12U; in height mode confirm the locked 6U = 42mm body.
- 4
Download the STL
Export a binary STL in millimeters from the gridfinity boxes 42mm builder, validated watertight in your browser before the download unlocks.
Why the two meanings collide at 6U
The collision is pure arithmetic: the pitch is 42mm, the height unit is 7mm, and 6 × 7 = 42. So gridfinity boxes 42mm tall echo the very number that spaces them apart, which is how the phrase grew two meanings in the community. It is a coincidence of the standard, not a rule — 3U, 4U and 5U boxes are as standard as gridfinity boxes 42mm, they just do not happen to match the pitch.
Still unsure what gridfinity boxes 42mm means for you? Print one small box in each mode: the pitch-mode box can be any height you like, while the height-mode box is always the 6U, 42mm-tall body. Seeing the pair side by side settles the question for good.
Sources & references
“Gridfinity storage is built on a 42 mm square grid with 7 mm height units” — the community-maintained open specification this site implements and cross-checks against.
- Gridfinity community specification— the community-maintained geometry specification our models implement
- Gridfinity reference documentation— profile reference used to verify the foot, lip and socket dimensions
- Gridfinity Rebuilt (OpenSCAD)— open-source reference implementation we cross-check generated geometry against
Frequently Asked Questions
Are gridfinity boxes 42mm wide?
No. One cell prints 41.5mm wide because the standard subtracts 0.5mm of clearance from the whole outline. The 42mm in gridfinity boxes 42mm is the pitch or the 6U height — never the printed width.
How tall are gridfinity boxes 42mm once printed?
42mm is the nominal 6U height before the stacking lip; with the lip the box stands 45.8mm. Height mode locks this so a set of gridfinity boxes 42mm tall matches part for part.
Can I get gridfinity boxes 42mm in other heights?
Yes — switch to pitch mode, where the 42mm in gridfinity boxes 42mm means spacing and height runs freely from 2U (14mm) to 12U (84mm). Only height mode pins the box to 6U.
Do both modes print community-standard STLs?
They do. Both follow 42mm pitch, 0.5mm outline clearance and 7mm U units, so boxes from either mode of the gridfinity boxes 42mm builder drop into the same baseplates as any community part.