Teardown (147 stars): a free Claude Code skill that builds a 3D machine simulator you can take apart.
Teardown is an MIT Claude Code skill that builds an offline HTML 3D simulator of a real machine from real dimensions, with live gauges and buttons that isolate each part. Three examples ship in the repo (V8, Cessna landing gear, Strandbeest). Useful for maintenance trainers and field techs who need a walk-through model of a pump or gearbox without buying simulation software.
For maintenance trainers, reliability engineers, and field service teams who explain equipment to new hires.

Found via @elvar_official on X