Can I use the Bend Allowance Calculator without an account or paid subscription?

Yes, the calculator is available publicly on the SendCutSend website with no required paid subscription to use the tool.

What units does the calculator support for material thickness and dimensions?

The calculator allows users to select desired units before inputting material thickness, base length, and flange dimensions, though specific unit options are not detailed in the available material.

How do I know if my flange dimensions are correct for the bend angle I entered?

The calculator provides a flat or 3D view of the part sketch, showing where bend lines need to be placed in the flat pattern with bend deduction considered, helping users verify flange positioning relative to the bend apex.

What is the difference between bend allowance and bend deduction output by the calculator?

The calculator outputs both bend allowance and bend deduction values; bend allowance refers to the length of the curved portion of the bend, while bend deduction accounts for the material removed or adjusted to achieve the desired outside dimensions after bending.

Structural & Materials EngineeringTool Review

Bend Allowance Calculator

Provided bySendCutSendsendcutsend.com

Its sheet metal bending calculator provides bend allowance and bend deduction outputs based on material, thickness, f...

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About this tool

What Bend Allowance Calculator does

SendCutSend’s Bend Allowance Calculator is a sheet metal and plastic bending calculator that outputs bend allowance and bend deduction values based on material type, thickness, flange dimensions, and bend angles. It is designed for practical fabrication planning and flat-pattern preparation, allowing users to determine the required flat pattern before sending a design to the site’s laser cutting services. The tool is available publicly with no required paid subscription. The calculator guides users through a step-by-step process: first selecting material type, thickness, and units; then entering base length and flange dimensions; followed by choosing between flat or 3D views to verify bend placement and overall outside dimensions. This structured workflow helps fabricators ensure accurate flat patterns for their parts. Compared to other bend allowance calculators, SendCutSend’s version is tightly integrated with a fabrication service, offering direct input of flange positions (left or right of the base) and a 3D preview option, which bridges the gap between calculation and physical production. While other tools focus on theoretical bend allowance formulas, this calculator includes specific guidance on formed flange lengths measured from the bend apex and provides immediate visual feedback within the site’s ecosystem.

Step by step

How to use the SendCutSend Bend Allowance Calculator

1
Select the sheet material type, thickness, and desired units in the calculator
2
Enter the base length representing the overall outside dimension of the base or largest section of the part
3
Input flange dimensions at the desired outside measurement, choosing left or right position relative to the base
4
Choose between flat or 3D view in the Results section to verify bend placement and expectations
5
Adjust the design to match desired outside dimensions and add bend lines from the part edge for fabrication

Is it right for you

Best for

Fabricators and designers who need to calculate accurate flat-pattern dimensions for sheet metal or plastic parts before sending their design to laser cutting services.

Limitations

Results are estimates based on input parameters
No unit switching once a selection is made
Designed specifically for parts intended for SendCutSend’s laser services

Questions

Bend Allowance Calculator FAQ

Can I use the Bend Allowance Calculator without an account or paid subscription?: Yes, the calculator is available publicly on the SendCutSend website with no required paid subscription to use the tool.
What units does the calculator support for material thickness and dimensions?: The calculator allows users to select desired units before inputting material thickness, base length, and flange dimensions, though specific unit options are not detailed in the available material.
How do I know if my flange dimensions are correct for the bend angle I entered?: The calculator provides a flat or 3D view of the part sketch, showing where bend lines need to be placed in the flat pattern with bend deduction considered, helping users verify flange positioning relative to the bend apex.
What is the difference between bend allowance and bend deduction output by the calculator?: The calculator outputs both bend allowance and bend deduction values; bend allowance refers to the length of the curved portion of the bend, while bend deduction accounts for the material removed or adjusted to achieve the desired outside dimensions after bending.

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