3D-printable parts written by Claude Code and previewed live in the browser. Every model is a single-file parametric OpenSCAD design on top of BOSL2 and QuackWorks; a Next.js
- WASM UI at stuff.seanoc.com exposes each one with live sliders and an STL download.
The interesting part isn't the models — it's the authoring loop.
- Describe the part to Claude Code: "parametric holder for X, fits Y range, mounts to Z."
- Claude writes the
.scad, annotates each@param, seeds a<stem>.invariants.pysidecar (watertight / bbox / single-body claims), and adds a catalog entry. - Push. CI regenerates thumbnails and runs the invariants gate.
- Vercel deploys on merge to
main. - Open the model's page at stuff.seanoc.com to tweak sliders and download an STL.
A minimal first prompt worth copy-pasting:
Add a new model: a parametric wall-mounted hook for hanging a bike helmet. Parameters: hook diameter (30–80 mm), mount plate size, Multiboard backer. Annotate with
@param, add an invariants sidecar, add a catalog entry, render thumbnails.
See AGENTS.md for the agent-facing spec (param grammar,
invariants, render pipeline) and app/README.md for
web-app architecture.
| File | Description |
|---|---|
cylindrical_holder_slot.scad |
Multiboard-mounted holder for any cylindrical item (42–77 mm tested), Multiconnect slot backer. |
popcorn_kernel.scad |
Cartoonish popped popcorn kernel — replacement piece for a Disney toddler-toy popcorn stand. |
spraycan_carrier_6x50mm.scad |
2×3 spray-can tote carrier for 50 mm cans: six open-front C-ring cradles, drainage base plate, semicircular-arched handle. Kid-safe, wet-safe, tall-can (195 mm) clearance. |
After cloning:
./scripts/setup-git-hooks.sh # one-time — attaches the commit-trailer hook
npm install
npm run dev # http://localhost:3000Render a model directly via OpenSCAD (Manifold backend required — CGAL OOMs on BOSL2):
openscad --backend Manifold -o out.stl models/cylindrical_holder_slot.scadlibs/ vendors BOSL2 and QuackWorks pinned to compatible commits —
newer BOSL2 breaks QuackWorks' vector-spin syntax. See
libs/README.md for the pins.
Every push and PR runs render-thumbnail regeneration, per-model
invariants (watertight, single-body, triangle ceiling,
PRINT_ANCHOR_BBOX drift), Playwright end-to-end tests, and vitest
unit tests. Thumbnails and invariants are mandatory gates. See
docs/ci.md for the full pipeline.
- Code — MIT.
- Models (
models/*.scad) —(see also
models/LICENSE) - Bundled libraries keep their own licenses:
libs/BOSL2/LICENSE(BSD-2-Clause) andlibs/QuackWorks/LICENSE(CC BY-NC-SA 4.0).
Built with Claude Code using a multi-agent authoring workflow.