Size of an unfolded sheet
These formulae are used to calculate the measurements of a sheet before folding, the point of reference being the measurements of the folded sheet.
Guiding calculation of the measurements of a sheet before folding 1 bend
Guiding calculation of the measurements of a sheet before folding 2 bend
Guiding calculation of the measurements of a sheet before folding 3 bend
Guiding calculation of the measurements of a sheet before folding 4 bend
When to use formulae
Calculations on this page are valid for an internal radius up to 1 mm, and a sheet thickness up to 3 mm.
Please note
The formulae on this page do not indicate whether a bend is possible: they are to be used solely for calculation.
Value to add for A
Value for A (addition per bend) depends on t (the thickness of the sheet)
When t = 0.50 mm; A = 0.15 mm
When t = 1.00 mm ; A = 0.30 mm
When t = 1.50 mm ; A = 0.45 mm
When t = 2.00 mm ; A = 0.60 mm
When t = 2.50 mm ; A = 0.75 mm
When t = 3.00 mm ; A = 0.90 mm
Reservations
Please note that these are a guide only. We cannot be held responsible for any mistakes in the results of the calculations made on this page, for example errors made when entering values or errors in the formulae themselves.
