Toadstool — twist-open bonbon capsule

A tiny Amanita-muscaria toadstool that twists open to hide a wrapped bonbon or candy inside. The red spotted cap is a screw-off roof; lift it and a clean toadstool stalk is revealed — an Amanita skirt ring and a soft volva bulb at the base — with a hollow chamber for a treat.

Designed to the 2.7-inch (68.6 mm) BONBON capsule: closed it is Ø46 × 52 mm with a min bounding sphere of Ø58 mm, so it drops into the capsule with room to spare.

What's in this listing

Multi-colour (Bambu Studio AMS)

Import cottage_cap_2color.stl → right-click → Split to Parts → assign red to cap_red and white to cap_spots. Coordinates are locked, so the spots land perfectly. Single filament? Just print cottage_cap.stl.

Printing

• Body: flat base on the bed, collar up. No supports.

• Cap: wide rim on the bed, dome up (narrows to the apex → zero overhangs, spots face up). No supports.

• 0.2 mm layers, 3 walls. All walls ≥1.5 mm; the coarse 3 mm-pitch thread prints clean at 0.2 mm.

Using it

1. Twist the cap on once to seat the threads (2–3 turns, snug not tight).

2. Drop a wrapped candy (≤ Ø24 mm through the neck; chamber holds ~Ø28 mm).

3. Screw the mushroom roof back on. Surprise sealed. 🍄

Parametric source

The OpenSCAD .scad is included. Knobs at the top: body_d / body_h / wall (stalk size + shell), cham_bore_d (candy opening), thr_crest_d / thr_pitch / thr_len / thr_clear (twist thread — raise thr_clear if tight), cap_d / cap_h / cap_wall (mushroom roof), spot_list (spot placement). Fork it, resize, share what you make.