Japanese Kumiko Fretwork (Asanoha / Sakura) Bevel-Jig Angle & Strip Micro-Length Calculator

Deterministic Exact plane crystallographic wallpaper-group (p6m / p4m) strip centerline intersection minus finite half-thickness miter cotangents engine (.pdf, .dxf, .stl) built for Lie-Nielsen, Veritas Tools, Suizan, Festool — zero-upload ephemeral Wasm RAM execution.

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