Made myself a toolbox so I could keep all my fidgety bits in a nice, contained little package. Imagine my astonishment when I discovered that the box I had built could hold only a hammer, hacksaw, and wrench, and nothing longer than 7 inches. Strange enough, since the toolbox itself is described as only 5 inches long. Doesn’t sound like any toolbox I’ve ever seen.
That’s a 21" Voyager steel toolbox from Harbor Freight. H/L/W are 10" x 21.25" x 8.625". Shaving off a bit to account for the walls, internal volume should be something to the effect of 10" x 21" x 8.5", or 1785 cubic inches, which converts to roughly 29.25 L. Say a round 28-29 if you want to account for the drawers and all that, too. More than enough space to hold a bunch of tools.
Nested containers is pretty cool and all, but hoo boy did it introduce some kinks that desperately need ironing out.