Manufacturing and machining
K-factor from measured BA
Solves K = (BA/θ_rad - Ri) / t from a measured bend allowance.
Related calculators
Sheet metal bend allowance
Calculates BA = θ_rad × (Ri + Kt) for a bend angle measured from the flat state.
Sheet metal bend deduction
Calculates BA, OSSB, and BD = 2 × OSSB - BA for one bend line.
Flat length from tangent lengths
Calculates L_flat = L_tangent_1 + L_tangent_2 + BA without mixing outside flange dimensions.
Material roll length and mass
Calculates length, outer diameter, turn count, and mass from the winding volume equation.
Measured springback
Describes measured springback from loaded and released angles; it does not predict material behavior.
Minimum bend radius from factor
Calculates minimum inside radius as user-supplied material factor times sheet thickness.