Stackable Lattice Basket — 4 Sizes + Parametric SCAD

Stackable Lattice Basket — 4 sizes + parametric SCAD

A family of cross-stackable lattice baskets. Every basket has four square corner posts that carry a cone peg on top and a matching cone socket on the bottom. Stack any basket onto any other basket — gravity + the 30°-from-vertical cone is the only "engine," and the square ring of post bottom (≈ 410 mm² across the four corners) bears the load. The cone is just for self-centring.

What's in the bundle

• stackable_basket.stl — the original 14×11.5×3 cm tray (open short side, photographed in the listing).

• stackable_basket_5x5x5cm.stl — 5×5×5 cm cube. Tiny parts bin, earring/screw/SD-card-sized.

• stackable_basket_10x10x5cm.stl — 10×10×5 cm square tray. Good for cables, batteries, dice, charms.

• stackable_basket_20x12x8cm.stl — 20×12×8 cm deep tray. Pencils, remotes, USB hubs, bathroom bottles.

• stackable_basket_leg.stl — optional cone-foot leg. Print four, plug them into a basket's bottom sockets, and the basket sits on short feet for a "raised platform" look. Same socket geometry as the stack interface, so legs work with any size.

• stackable_basket.scad — parametric source. Top of the file: basket_l, basket_w, body_h, open_side, strut_pitch, strut_w, etc. Cone-peg + corner-post dimensions are shared, so every basket you derive STILL cross-stacks with the printed sizes.

Print

• Orientation: flat bottom on bed. Cone peg points up. No supports needed — every overhang ≤ 30° from vertical (the cone socket on the bottom narrows upward at ~0.12 mm/layer @ 0.2 mm layer height, well inside FDM bridging tolerance).

• Walls: 3 perimeters, 0.2 mm layer height, 15 % infill (the lattice does the structural work). Bambu A1 / X1C / P1S all fine.

• Material: PLA is great. PETG works. Translucent filaments make the lattice look like a Czech crystal basket — recommend.

• Bed size: 5/10/14 cm sizes fit any printer. The 20×12 cm long variant needs a 220 mm bed (A1 / X1C / P1S OK; mini-printers no).

Design notes

• Lattice = 45° crosshatch struts, 2.5 mm thick, 10 mm pitch.

• Wall thickness: 2.5 mm (lattice band + top rim).

• Floor thickness: 2.5 mm.

• Corner posts: 16×16 mm square × body height.

• Cone peg: Ø14 → Ø7, 6 mm tall. Socket: Ø14.4 → Ø7.4, 6 mm deep (0.4 mm radial clearance — slides on, doesn't bind).

• Open side: the SCAD lets you choose which side has no lattice + no rim (open_side = "front" | "back" | "left" | "right"). All shipped variants open on a SHORT side so the stack stays open in the same direction at every level.

Customising

Open stackable_basket.scad, change the parameters at the top, hit F6. Suggested overrides:

• Want a 30×10×5 cm long under-shelf tray? basket_l=300, basket_w=100, body_h=50.

• Want a tighter lattice? strut_pitch=7.

• Want the open side on the long edge? open_side="front".

The published STLs are produced exactly via that path — see build.sh (parametric one-liner per variant).

Stacking math (in case you want to derive your own)

At the interface plane the corner-post bottom (16×16 mm minus the Ø14.4 mm socket mouth, ≈ 102 mm² each × 4 ≈ 410 mm²) is what holds the upper basket's weight. PLA crushes at ~70 MPa, so each tower of 3-4 baskets is rated for >> 28 kN — practical limit is what you fill them with, not the plastic.

License

CC BY — fork it, scale it, share what you make. Source SCAD is in the bundle.