Editorial scaffold

Flat pattern math for multi-bend parts

Editorial scaffold for calculating developed length across multiple bends without double-counting bend allowance or bend deduction.

Published 2026-05-15Updated 2026-05-15multi bend flat pattern math

Outline

  • Define developed length for a sequence of straight legs and bend regions.
  • Explain when each bend needs its own radius, angle, and K-factor.
  • Show where outside dimensions can cause double counting.
  • Add a shop checklist for multi-bend prototypes.

Internal-link targets

FAQ

Can one K-factor cover every bend in a multi-bend part?

Planned answer: only if the bends share material, thickness, radius, angle, grain direction, and tooling closely enough to justify it.