knewnothing-git
cb6f984bbc
Blockers -------- 1. requirements.txt was missing scipy, networkx and lxml. With only trimesh/numpy/rtree installed the first measure of any mesh died with a raw ModuleNotFoundError from mesh.body_count, and .3mf could not load at all. Reproduced in a clean venv, then confirmed fixed there: all four advertised formats now load and measure. Only scipy is mirrored into requirements-dev.txt; networkx and lxml are already listed under the repo tests block, matching how trimesh is handled. 2. Wall thickness is now measured per connected body. Cast against a whole assembly, a ray can leave one body, cross a mating clearance and land on its neighbour, recording the fit gap as a wall - so a tight-clearance assembly reported a wall violation no single part had. _wall_facts splits first and measures each body against itself, pooling the results and adding a per_body breakdown. Sample budget is shared by surface area with a floor so small bodies are still sampled. Should-fix ---------- 3. Each fact family now runs through _safe and degrades to an error field. A planar mesh dies in convex_hull; previously that cost the user the whole report, including the facts that had computed. 4. New scale block reports bbox_diagonal_mm and units_suspect. A meters-scale mesh sits under the 0.1 mm on-plate tolerance, so every down-facing face reads as on-plate and the part looks like a flawless print. SKILL.md now branches on the measured field instead of asking the agent to eyeball the bounding box. 5. Added the skill to the README table and the docs page array. 6. process-limits.md now names which rows have a measured counterpart today (walls, self-supporting angle) and which do not (hole diameter, positive feature, unsupported bridge), closing the eyeballing loophole. SKILL.md also gained a rule to attribute an assembly's wall violation to the body it belongs to. Verification ------------ - Clean venv built from the skill's own requirements: 26 checks covering multi-body clearance, 81k-face performance, a 42-body assembly, planar, meters-scale, broken export, all four formats, degenerate mesh. - Per-body change costs ~150 ms on an 81k-face mesh (7493 -> 7643 ms); the bulk of that time is trimesh's pure-Python ray fallback, not the split. - Real part measurements unchanged: L-bracket still 1200 mm2 unsupported, 9.0 mm median wall. - gcode/urdf/dxf suites fail identically with and without this change; those are pre-existing.
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A library of agent skills for CAD, CAE and CAM
text-to-cad
text-to-cad is a library of agent skills for generating, inspecting, sourcing, slicing, and handing off CAD and robot-description artifacts from local project files.
|
CAD
|
URDF
|
SRDF / MoveIt2
|
🧰 Skills
Install the library to give agents focused workflows for CAD, fabrication, robot description files, simulation, and local review.
| Skill | Summary | Source |
|---|---|---|
| CAD | Creates and edits CAD models from plain-language or image requests, with STEP as the main output along with options to export to STL, 3MF and GLB. | skills/cad |
| CAD Viewer | Shows local browser previews for CAD and robot files. | skills/cad-viewer |
| step.parts | Finds off-the-shelf STEP parts like screws, bearings, motors, and connectors. | skills/step-parts |
| DXF | Creates 2D DXF drawings like profiles, templates, gaskets, and cut layouts from Python sources or CAD geometry. | skills/dxf |
| URDF | Writes robot structure files with links, joints, limits, inertials, and meshes. | skills/urdf |
| SRDF | Adds MoveIt planning groups, end effectors, poses, and collision rules to a URDF. | skills/srdf |
| SDF | Creates simulator models and worlds with frames, physics, sensors, and lights. | skills/sdf |
| SendCutSend | Checks DXF and STEP files before upload to SendCutSend. | skills/sendcutsend |
| DfAM Check | Measures mesh printability per process: wall thickness, overhangs, support volume, and build orientation. | skills/dfam-check |
| G-code | Slices supported mesh files into validated, printer-profiled FDM .gcode with real slicer CLIs. |
skills/gcode |
| Bambu Labs | Dry-runs, uploads, and cautiously starts local Bambu Lab print jobs from validated .gcode. |
skills/bambu-labs |
| Implicit CAD | Creates browser-native implicit CAD models using GLSL signed-distance fields and CAD Viewer raymarch rendering. Experimental. | skills/implicit-cad |
💻 Installation
For production use, install or clone from main; that branch contains the
generated skill outputs needed by provider installers.
Skills
Install text-to-cad with the Skills CLI:
npx skills add earthtojake/text-to-cad
This is the preferred installation path. It installs the individual skills directly for supported agents.
Use the same command to update. add re-fetches the package and overwrites
what is already installed, so it both refreshes existing skills and installs any
skill added in a newer release. npx skills update only refreshes skills already
in your lockfile, so it silently misses new ones — which matters here, because
releases do add skills.
Neither command removes a skill that was retired upstream; drop one with
npx skills remove <skill> if you need to.
(npx skills install … still works — it is an undocumented alias for add.)
Plugins
Provider-native plugin installs are also available for Codex, Claude Code, and Grok Build:
# Codex (requires Codex 0.142.0 or newer)
codex plugin marketplace add earthtojake/text-to-cad
codex plugin add cad@text-to-cad
Codex resolves this repository-root plugin only from 0.142.0 onward. On older
versions the plugin is skipped silently and never appears in codex plugin list;
upgrade with npm install -g @openai/codex@latest.
# Claude Code
claude plugin marketplace add earthtojake/text-to-cad
claude plugin install cad@text-to-cad
Grok Build uses the existing .claude-plugin/marketplace.json; there is no
separate Grok plugin manifest.
# Grok Build
grok plugin install earthtojake/text-to-cad --trust
grok plugin enable cad
Restart your agent if newly installed skills do not appear. For local
development, branch from develop, open PRs against develop, and use the symlink
workflow in CONTRIBUTING.md.
🛠️ Contributing
Development happens from the develop branch; open PRs against develop, not main.
For local contribution workflow, skill linking, and validation guidance, see
CONTRIBUTING.md.