Onshape
In Sheet metal model, enter thickness and default bend radius. Choose K-factor for the bend calculation and enter the value shown here. Check any per-bend overrides, then inspect the flat pattern.
Onshape sheet metal settings ↗SHEET METAL / DESIGN TOOLS
Developed length calculator
Powered by Xeon NC
Start with Xeon’s material and tooling data. Build a bend schedule, get your flat-strip dimensions, and take the settings into CAD.
01 Material & geometry
Outside lengths run to the virtual sharp intersections of the outside faces. Each interior segment includes the setbacks at both ends. Tangent lengths exclude every curved bend region. Switching this choice reinterprets your numbers.
Bend schedule
Angles are turns from flat: 90° turn = 90° included; 30° turn = 150° included. Up to eight parallel bends. Set UP/DOWN directions in your formed CAD model.
DEVELOPED LENGTH
— in
Rectangular blank
Flat-strip preview
REFERENCEBlue bands = developed bend regions · dashed lines = bend centers. Constant-width strips only; add holes, reliefs and other profiles in CAD.
Your bend schedule
| Bend | Turn / included | Allowance | Deduction | Flat center |
|---|
DXF contains a rectangular CUT outline at 1:1 in the selected units. Optional BEND_REFERENCE lines are not cut paths. Import as a 2D sketch; the file does not create a folded sheet metal feature.
02 / TRANSFER INTO CAD
Match the model to the process.
Use the same thickness, inside radius and K-factor in your sheet metal model. Check the resulting flat against this schedule. The CSV is a readable schedule, not a native bend-table file.
Autodesk Fusion
Create a sheet metal rule with this thickness, K-factor and bend radius. Apply the rule to your component, create its flat pattern, and verify the dimensions before exporting.
Fusion rule reference ↗SolidWorks
In the Sheet-Metal feature, set thickness and bend radius; under bend allowance choose K-Factor. Enter the displayed value and check feature overrides before flattening. Do not also apply a separate deduction to the same bend.
SolidWorks K-factor reference ↗03 / STANDARD ANGLES
One material. Six bend angles.
The values below use the selected catalog thickness, radius and K-factor. A calculated value does not mean the assigned tools can make that angle.
| Turn from flat | Included angle | Bend allowance | Bend deduction | Tool / data screen |
|---|
How the length is developed
With θ as the turn angle in radians, T as thickness and R as inside radius:
BA = θ × (R + K × T)
Outside setback = (R + T) × tan(θ / 2)
BD = 2 × setback − BA
For outside mold-line dimensions, subtract each bend’s deduction from the sum of the segment lengths. For straight tangent lengths, add each bend’s allowance. Bend centers lie halfway through each developed bend region.
Know what the result covers
All rows in Xeon’s bend-data catalog are selectable. Rows marked not bendable, conflicting thickness labels and unreachable tool angles pause export. Materials without Xeon bend data are not assigned an invented K-factor.
This tool develops a uniform strip with parallel bends. It does not unfold a box, resolve corner reliefs, check self-intersection or tool collisions, or compensate for springback. The catalog minimum flange is a screening reference; angle-specific support and bend sequence still require review.
The radius and K-factor are nominal planning values, not a measured bend trial. Validate the material condition, grain direction, actual thickness and process before releasing a production flat.
Review Xeon’s tooling library →