Japanese Chef-Knife Whetstone Spine-Height Angle & Behind-the-Edge Thinning Solver

Deterministic Exact wedge trigonometry sin(theta) = (H_spine - t_spine/2) / W_blade + bilateral primary/micro-bevel cross-sectional cutting-force wedge model engine (.svg, .pdf, .stl, .json) built for Shapton, Naniwa, Tormek, TSPROF — zero-upload ephemeral Wasm RAM execution.

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