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The K factor, also known as the neutral axis factor, plays a pivotal role in predicting the behaviour of a specific material during bending. It is used to calculate bend deduction and bend allowance and is unique to each material being bent. The K factor considers material thickness, tensile strength, elasticity, and other factors affecting the deformation of the metal.

To determine the K factor, sheet metal fabricators use empirical data or consult material-specific reference tables. It is important to note that the K factor can vary based on different bending techniques and tools employed. which JFY Bend takes into consideration, this helps to ensure that the unfolded flat pattern is accurate and will match design standards.