STL Generator for Jigs and Replacement Parts

Design jigs and replacement parts as parametric build123d scripts and export STLs that print right the first time. The deliverable is the STL: the printer matters only for whether the part fits the bed and which clearances hold, and both are parameters.

Running build123d

The scripts live in ${CLAUDE_SKILL_DIR}/scripts/ (this skill's folder). Run them with uv, which needs no setup and works on any Python version:

uv run --with build123d python ${CLAUDE_SKILL_DIR}/scripts/spacing_block.py 10

Without uv: create a venv and pip install build123d, then run with that venv's python. Write the STLs into the user's working directory (or where they ask), never into the skill's own folder.