Use this workshop calculation to turn measured dimensions and the selected construction convention into a cut, spacing, fit, or material-planning value.

Form radius (mm)

Radius of the bending form in millimeters.

Springback (%)

Expected springback as a percentage of the form radius.

Compute the actual radius of a bent workpiece after springback on a bending form. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Actual radius (mm)

Actual radius after springback in millimeters.

• Nominal dimensions, kerf, moisture movement, hardware clearances, wall squareness, and manufacturer instructions can change the required shop dimension. Measure the actual assembly and test critical joints on scrap before cutting finished material.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Complement the calculated dimension with a physical story stick, dry fit, or full-size layout. Follow the hardware, coating, adhesive, or machine manufacturer's limits where they differ from a rule of thumb.

• Steam Bending Time Calculator

  Compute steam bending time at one hour per 25 mm of workpiece thickness.

• Workbench Vise Jaw Width

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  Remaining countertop run after reserving a 5 mm movement gap at a butt joint; check finish and sealant requirements separately.