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Fabrication / Sheet metal
Bend Allowance Calculator
Estimate neutral-axis bend length, outside setback and bend deduction for a sheet-metal bend.
Sheet-metal bend
Flat-pattern values
Bend allowance4.1783 mm
Neutral axis K = 0.33
- Bend allowance
- 4.1783 mm
- Outside setback
- 4 mm
- Bend deduction
- 3.8217 mm
K-factor depends on material, tooling and bend process. Use tested shop values or bend tables for production flat patterns.