Learn the key differences between bend calculation and K-factor in sheet metal design using SOLIDWORKS. This video explains how bend allowances determine the correct flat length for accurate manufacturing and explores three methods: K-factor, bend calculation, and bend allowance/deduction. Understand the role of the neutral axis, why K-factor is a general rule of thumb, and how bend calculation uses DIN6935 tables for greater accuracy. We also cover practical testing for bend allowance and deduction, plus how gauge tables automate the process. Perfect for engineers looking to improve precision in sheet metal workflows and avoid costly errors in production.