Spike vs. sustained

kerfmaster pin list · Definitions

recordmixedd11States what the code does today. Auditable against the code — this is the only type that can go stale.

Content last changed 2026-08-03 — computed from the item itself, not typed.

Vocabulary — Heal stage

⚠ Known defects

This item's subject has a known defect in the code. Recorded and deliberately NOT fixed — recording a defect is not a licence to fix it. Source: cadmaster/defects.json → cadmaster/KNOWN_DEFECTS.md, not this page — the text below is generated from the register so the two can never disagree.

D11 — Borderline heal chains are counted, then smoothed with no flag reaching anyone
heal.classify_corners returns true corners AND borderline vertices -- the ones it could not confidently call a corner or an arc. heal() sums them into meta["borderline"] (9 on novi at tol 0.010) but records no locations: meta carries corner_pts and micro_pts and no borderline_pts. The count is printed only by heal.py's own __main__ block and reaches neither board.
Cost today: Nine unreviewed judgement calls per part, invisible.
Verified: 2026-08-03 at 36a55a3. Healed novi at tol 0.010: meta['borderline'] == 9; the only location keys in meta are corner_pts and micro_pts.

How the healer decides corner vs curve at a vertex:

Spike = one vertex eats almost all the turn with near-straight neighbours → a real corner: keep it sharp, split the chain here, never round.
Sustained = a gentle turn spread over many facets (a few degrees each) → a coarse arc: fit it as tangent-continuous arcs, spread the correction.

The robust test is neighbour consistency, not raw turn size: repeated ~equal turns at ~equal spacing = arc to smooth; an isolated big turn between straight runs = corner to keep. Genuinely borderline chains get flagged for a human, not silently guessed.

Where it lives in the code (2026-08-03): heal.py — CORNER_DEG 35.0 (the turn that may be a corner), ALWAYS_DEG 55.0 (always a corner), CONSISTENCY 2.5 (the spike multiplier — how much bigger than its neighbours a turn must be), CORNER_MIN_FACET 0.002, JOG_DEG 1.0. heal() returns corners, borderline and corner_pts in its meta, and that is exactly what "flagged for a human" means today: a count and a coordinate list, not a prompt.