Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 06 — Iron and steel  /  About year 3
06.08

Forge welding

iron joined to iron at white heat

MakingYear 3Stands on 61 earlier

AWhat it needs

Needs 61 other products in all, 2 of them directly.

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