Forging an Iron Chain — Bending, Welding, and Linking

The iron chain is the strongest flexible connection in pre-industrial technology. Chains anchor ships, lift drawbridges, suspend cauldrons over fires, secure doors, and hang signs. Each link is an individual forge weld — the chain is only as strong as its weakest weld, so chain-making demands consistent technique across dozens or hundreds of identical operations.

A chain is made by bending short lengths of iron rod into open ovals, threading each new link through the previous one before closing it, and forge welding the joint shut. The rhythm is repetitive: bend, thread, heat, weld, move on. A skilled chain-maker works in a continuous cycle, keeping several links at different stages in the fire at once.

Chain-making is the ultimate test of forge welding skill. Each weld is small and must be completed quickly before the thin rod cools. There is no room to reheat and retry without risking damage to the adjacent links. It teaches economy of movement and precise heat control.