Gridfinity-Style Storage Bins 1x1 to 3x2 + 3x3 Baseplate (42 mm grid)

Plain storage bins on the 42 mm Gridfinity grid, built with the foot profile of the public spec (0.8 / 1.8 / 2.15 mm). Four bin sizes (1x1x3, 2x1x3, 2x2x3, 3x2x4 units) plus a 3x3 baseplate. Modeled parametrically in CadQuery; each file is one watertight body. Simplified: no stacking lip, no magnets, no dividers. The bins are 41.2 mm and the baseplate pockets give about 0.1 mm clearance per side (digitally checked, no interference). The baseplate ribs are thin at the top (about 0.6 mm), so use…

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