Highly customizable snug box (lidded) for drill bits

Highly customisable snug box for drill bits.

A lidded box for drills, initially designed to be as small as possible and fit each drill in a separate compartment. After surprisingly little effort the design application has been broadened to generate drill boxes with customisable number and length of compartments, which width is a given multiplication of drill diameters.

Note that not all customisation can be done in customizer interface, for the latter does not allow customising arrays of arbitrary size. So start by changing the 'drills' and 'lengths' to suit your needs, e.g.,
drills = [ 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0 ];
lengths = [ 49, 57, 61, 70, 75, 80, 86 ];
defines 7 compartments that should fit drills of provided diameter and length.
Only then head to the customizer interface, where you can tune how many drills should sit in each compartment, how longer/broader/taller the compartments shall be (than the drills contained in them), and where to place the cutout for picking up drills (if any).
Also, the wall widths, hinges and latches can be customised.

The .scad can also add mouse ears to aid battling the wrapping that can be an issue upon printing model of this size (YMMV).

The attached .stl files are as follows:

1. The box that I printed for myself, photos of which accompany the model.
   It stores drills starting from 4.5mm every 0.5mm up to 10mm, and suits me good enough, but it's hard to pick up a drill with one's fingers (too tight spacing), so I do not recommend this version.

2. Rework of the box above, where the cutout for picking up drills is placed so that one can pick up drills easily (at least I hope so).

3. Box for dill bits of diameters 9, 7, 5, 3, 4, 6, 8, 10 (in that order), two drills per compartment, with mouse ears enabled.
   This model is there to showcase what can be customised.

I printed my box with 0.2mm layer and 0.5mm nozzle, out of ASA, the material which I discourage to use for this print, for it wraps more than others (but I eventually need to learn how to print ASA, hence this mostly successful attempt). I used a piece of filament as the hinge pin.

Edited 2026.02.22: As pointed out in the comments, the design had issues when the box was too tall. I changed the .scad file to produce a usable box, although the design was not meant for anything but long thin items - the lid is as high as the box, which starts making gradually less sense the taller the box is.