Compute flat blank material distributions, localized bend allowances, and exterior setbacks for metallic manufacturing press layouts.
1. Bending Parameters
Enter individual leg flange lengths, inside bend specifications, and your material shift ratio to evaluate development dimensions.
Total Flat Blank Length
0.0000 in
Bend Allowance (BA)
0.0000 in
Outside Setback (OSSB)
0.0000 in
Bend Deduction (BD)
0.0000 in
Press Brake Geometry Principles & Math
Precision sheet metal layout resolves material deformation behavior across press tool strikes by isolating the component's internal Neutral Axis. The material K-Factor defines the ratio of this shifting structural layer to the raw material gauge constraints. Bend Allowance (BA) equations resolve exact flat stretch boundaries over radial geometric movements through the standard formula: BA = Angle × (π / 180) × (R + K × T). Outside Setback (OSSB) tracking establishes the distance from the intersection of the flat planes to the edge tangent point, while Bend Deduction (BD) parameters reconcile final blank dimensions via a basic deduction matrix (BD = 2 × OSSB - BA).
Disclaimer: This tool is provided for educational and informational tracking purposes only. Material deformation metrics provide ideal calculations. Real-world metal behaviors differ widely based on roll directional grains, specific metallurgical tempers, bottoming or air-bend die width tooling configurations, and machinery calibration metrics. Component cut paths must be physically cross-checked and run against raw material testing tabs by qualified press brake operators before initiating industrial blank stamping operations. The website owner assumes no liability.