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Bend Layout.
Lay out the flat.
Estimate the developed blank and bend locations for a profile with one or two flanges.
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// 08 — Bend Layout
Flat Blank
Layout Calc
Layout Calc
Enter outside finished dimensions — base width and flange heights — to get your flat blank length, bend deductions, and exactly where to draw your bend lines.
inches
degrees (inside)
inches ≈ t
// OUTSIDE FINISHED DIMENSIONS
inches (outside)
inches (outside)
inches (outside)
// Formula
BD = 2 × OSSB − BA | BA = (π/180) × angle × (r + K × t) | OSSB = tan(angle/2) × (r + t)
Flat = (Left − BD/2) + (Base − BD) + (Right − BD/2)
// FLAT BLANK DIAGRAM — red dashed lines = bend lines