DRAWERFORGE

Internal dimensions. Measure at the tightest point and subtract 1–2 mm so the assembly slides in.

Only affects the material estimate, not the geometry. A baseplate is nearly all shell — the socket walls are a couple of perimeters wide and print solid whatever you set — so this moves the figure much less than it does for bins. It is the slab under a solid plate that the infill actually reaches.

Staggered offsets joints between rows like brickwork so seams never line up. Fewest plates searches split patterns and picks the one needing the fewest print beds — often pairing two narrow pieces on one plate. For full control click grid lines on the cut map; that switches to Manual.

Tabs on one piece drop into open-bottomed pockets on its neighbour. Assemble on a flat surface, then lower the whole plate into the drawer. Placed at every wall junction along each seam.

Jigsaw lobes printed on one piece lock into matching cavities on its neighbour — the strongest in-plane joint. Adds a ~2.6 mm solid floor that the lobes live in; assembles by lowering pieces together.

Bowtie-shaped recesses are cut into the underside of both pieces; printed keys bridge each seam. The waisted middle is what stops the seam pulling apart. The simplest of the loose-key joints and the easiest to press home — pick it unless a seam is long enough to creep sideways. Adds a solid floor to house the keys; the keys STL is in Export and in the ZIP.

The same idea with a jigsaw profile: the lobes grip along the seam as well as across it, so a long run cannot slide lengthways the way a row of bowties can. Stiffer to press in, and worth that on seams past three or four cells. Adds a solid floor to house the keys; the keys STL is in Export and in the ZIP.

Dog-bone recesses under both pieces take a sprung key: the slot through its middle lets it compress, so it clicks in and holds. Adds a solid floor. Keys STL in Export.

Tiny H-shaped keys (≈3.6 × 3.8 mm) sink into pockets in the grid walls at each junction, pressed in from beneath during face-down assembly. No floor, almost no filament, invisible from above. Keys STL in Export.

From above suits drawers you can't lower an assembled plate into: lay the pieces in place, then drop a key into each junction from the top. Keys sit just below flush; the rim gets a small opening at each junction, hidden under the bins' rounded corners.

Wall housing sinks slim keys into the grid walls at each junction — the plate stays open-bottomed and uses no extra filament. Keys are smaller, so the hold is lighter; solid floor gives the strongest joint.

0.2 suits most printers. Print the test tile pair first; tighten to 0.15 or loosen to 0.25 from there.

A solid floor puts 2.8 mm of plastic under the whole plate. Corner pockets put a small rounded boss under each magnet or screw position instead, leaving the rest open underneath: much less filament and a much shorter print, at some cost in stiffness. Gravity-fit drawers need neither magnets nor screws.