FlexBox2 - Versatile Gridfinity Bin

Years ago, I finished building the cabinets to store my hardware collection, but never got around organizing the contents. Now, I’ve finally transformed those chaotic parts drawers into a well-organized hardware stash. Starting with my own box design Flexbox, the first step in upgrading the model was incorporating the popular Gridfinity specification. Another key change was swapping out the labeling areas for adjustable dividers, allowing me to store even the smallest parts efficiently without wasting too much space. One feature I kept from the original design is the consistent wall thickness along the z-axis.

I now group the individual bins by content type, finish, and diameter, then sort them by length. To keep the setup clean, I’ve opted for discreet labels on the sides or undersides of the boxes, ensuring a neat and streamlined appearance.

Features

Consistent Wall Thickness

In the first iteration of this model I used solid blocks with 0% infill and 0 top layers to get consistent vertical thickness on all walls. PrusaSlicer unfortunately add additional solid infill layers on sloped surfaces when doing this. To make it even easier to print in this current revision I added the boxes as hollow objects that are directly printable with every slicer.

Parametric Source File

Find the attached Fusion 360 file with neatly organized user parameters to customize width, length and height. When changing these parameters all dimensions update automatically. 

Sometimes Fusion fails to calculate all features on the first try. In such cases run Modify → Compute All. Beware that this file is slow and Fusion may appear frozen when changing values, be patient.

Print Instructions

No specific settings required.

Related Models

• EcoGrid - Minimalistic Gridfinity Base
  My reinvention of the wheel, which is the Gridfinity base grid

Changelog

• 2026-02-14 Added mirrored notches to all 2× and 3× slotted dividers, enabling subdivision of 2×3, 2×2, and 3×3 bins. This feature had been removed previously for aesthetic reasons. The single-sided–notch version remains available in the “Specials” folder. Thanks to @NanLi_2526257 for flagging this.

• 2025-06-13 Reshaped the labels per @Flyespresso_296017’s suggestion so they now tuck into the groove for extra rigidity. This makes installation a bit more finicky, but the trade-off in stability and aesthetics is well worth it.