# The Foundry | Big Mech Energy Idle Wiki

Unlocked by scrapping **Sir Loin**. His forge survives him, and it is hungry: feed it **three spare duplicates** of the same part at the same rarity plus Components, wait out the heat, and it pours **one copy a rarity higher** with fresh affix rolls.

- **One job at a time.** Choosing what cooks overnight is the decision. Higher target tiers cost more and forge longer (a Based pour takes an hour; Unit and GOATED are overnight projects).
- **Equipped parts never melt.** Only spares in the stash count toward a pile.
- **The heat strike:** when the pour is ready, strike while the marker crosses the white-hot band for one bonus affix. Skipping the timing game costs nothing but the bragging.
- This is the reliable road to [Based parts](/wiki/parts/) that wave drops cannot promise, and the ONLY road to Unit (Based ×3) and GOATED (Unit ×3). The power ceiling is the same tier multiplier loot already obeys.