Stackable Advent Calendar Tree – 24 Drawers, No Supports

A 24-door advent calendar you build like bricks. Every door is its own module – a housing with a drawer. The modules lock together with dovetail rails, so you can stack them into a Christmas tree, a pyramid or a flat wall without glue or screws.

- Brick-bond stacking: two rails on top of each housing (at ¼ and ¾ width) – modules sit straight or offset by half a width, which gives the tree its shape.
- Slide-on from the front: a module locks to its side neighbour and the one below at the same time.
- Two-colour numbers on a single-nozzle printer: numbers are recessed 0.6 mm into the drawer front (printed face down). One colour change at 0.6 mm (M600 / layer 0.80 mm in PrusaSlicer) colours every number on the plate. Without it, the numbers stay readable as an engraving.
- Contents stay put: a 45° ramp at the back of each drawer keeps sweets inside.
- Doesn't tip over: the base reaches 60 mm forward under the tree – please always use it.
- Star topper slides onto the top module.

**Included:** housing (print 24×), drawers 01–24 + one blank drawer, star, base, 4 ready plates for 250 × 210 mm beds (MK3-sized). Smaller beds: use the single STL files.

**Size:** module 50 × 40 × 50 mm, drawer inside approx. 41 × 33 × 48 mm. Tree 300 mm wide, 330 mm tall incl. star and base. Filament approx. 1.1 kg.

**Print settings:** PLA, 0.2 mm layers (required for the colour change), 3 perimeters, 15 % infill, no supports, no brim. Housings stand on their back wall, drawers lie on their front.

**Food note:** PLA prints are not food-safe – fill the drawers with wrapped sweets or small gifts only.