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Tolerance gate vs. fit target

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Content last changed 2026-08-02 — computed from the item itself, not typed.

Vocabulary — Heal stage

The tolerance argument is an accept/reject GATE, not a fit target. We always best-fit as tightly as the geometry allows (target ~0.5 thou, FIT_TARGET=5e-4); the tol passed to heal() (e.g. 0.010") is only the line above which a result FAILs. So a 10-thou gate does not mean we fit to 10 thou — we fit far tighter and use the gate to reject anything that couldn’t get under it.