# The Smelter | Big Mech Energy Idle Wiki

Unlocked by scrapping **Sir Cumference**. The round one digested everything; now his furnace digests for you. Queue spare parts and they melt, one at a time, into **Alloy**.

- **Yield scales with tier** (Nerfed 1 up to GOATED 300) plus any levels invested. Parts leave your stash the moment they queue, so this is also the bulk-scrap valve.
- **Alloy buys permanent capacity:** Ballast Plating (+Weight), Stash Racks (+Storage) and Bay Extensions (+max drones). Each rank doubles in price.
- Capacities are additive on purpose. They gate options, not throughput; the damage math never touches Alloy.
- Equipped parts and the Mech Core never melt. The furnace has standards.