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v1.7.3 — smooth fine-pitch internal threads (#219)

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@gsdali gsdali released this 19 Jun 00:15
· 12 commits to main since this release
v1.7.3
4d292f3

Bug fix. threadedHole on a fine-pitch internal thread (3/8-16 UNC, M10×1.5) came out faceted: the ruled:false smooth helical cutter self-intersects in a degenerate band around the default ~14 sections/turn (axial step per section ≪ groove half-width → the loft pinches → a no-op boolean → faceted fallback).

The cut path now builds the smooth internal cutter at a denser, escalating section count (24→36/turn) and takes the first sound cut; the faceted cutter remains the fallback for awkward composite bodies. Fine-pitch internal threads now cut smooth — the wing-nut cookbook bore drops from ~247 to ~15 faces. No API change.

Source-only release (OCCT 8.0.0p1 xcframework unchanged).

Closes #219.

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