Sheet-Metal 3D .STEP Unfolder with V-Die K-Factor & Bend-Deduction Calibration

Deterministic Air-bending radius empirical model Ri ≈ 0.16·V (steel), DIN 6935 bend allowance BA = π(Ri + K·T)(θ/180) & outside setback OSSB = tan(θ/2)(Ri+T) engine (.step, .dxf, .svg) built for Trumpf, Amada, Bystronic, SendCutSend — zero-upload ephemeral Wasm RAM execution.

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