forked from 1b-agent/fieldcraft-upstream
file.sample crank-mirror partitions the crank arm on its symmetry plane, sweeps one half all-hex (hex20) and mirrors it into one conforming mesh, then defines the crank-arm model. Samples may now run preparing commands (datums, partitions) before their script sees the bodies. Its test checks the halves alike and joined, every element valid and the sets on both halves; the heavy test solves it: sigma_xx at the root -62.43 / +62.43 MPa against M/Z = 62.5. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo